forked from extern/shorewall_code
b0cf1dc06d
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@2166 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
1501 lines
32 KiB
Bash
Executable File
1501 lines
32 KiB
Bash
Executable File
#!/bin/sh
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#
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# Shorewall Packet Filtering Firewall Control Program - V2.4
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#
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# This program is under GPL [http://www.gnu.org/copyleft/gpl.htm]
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#
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# (c) 1999,2000,2001,2002,2003,2004,2005 - Tom Eastep (teastep@shorewall.net)
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#
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# This file should be placed in /sbin/shorewall.
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#
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# Shorewall documentation is available at http://shorewall.sourceforge.net
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of Version 2 of the GNU General Public License
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# as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA
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#
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# If an error occurs while starting or restarting the firewall, the
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# firewall is automatically stopped.
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#
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# The firewall uses configuration files in /etc/shorewall/ - skeleton
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# files is included with the firewall.
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#
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# Commands are:
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#
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# shorewall add <iface>[:<host>] zone Adds a host or subnet to a zone
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# shorewall delete <iface>[:<host>] zone Deletes a host or subnet from a zone
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# shorewall start Starts the firewall
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# shorewall restart Restarts the firewall
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# shorewall stop Stops the firewall
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# shorewall monitor [ refresh-interval ] Repeatedly Displays firewall status
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# plus the last 20 "interesting"
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# packets
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# shorewall status Displays firewall status
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# shorewall reset Resets iptables packet and
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# byte counts
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# shorewall clear Open the floodgates by
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# removing all iptables rules
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# and setting the three permanent
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# chain policies to ACCEPT
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# shorewall refresh Rebuild the common chain to
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# compensate for a change of
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# broadcast address on any "detect"
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# interface.
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# shorewall show <chain> [ <chain> ... ] Display the rules in each <chain> listed
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# shorewall show log Print the last 20 log messages
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# shorewall show connections Show the kernel's connection
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# tracking table
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# shorewall show nat Display the rules in the nat table
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# shorewall show {mangle|tos} Display the rules in the mangle table
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# shorewall show tc Display traffic control info
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# shorewall show classifiers Display classifiers
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# shorewall show capabilities Display iptables/kernel capabilities
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# shorewall version Display the installed version id
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# shorewall check Verify the more heavily-used
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# configuration files.
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# shorewall try <directory> [ <timeout> ] Try a new configuration and if
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# it doesn't work, revert to the
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# standard one. If a timeout is supplied
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# the command reverts back to the
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# standard configuration after that many
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# seconds have elapsed after successfully
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# starting the new configuration.
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# shorewall logwatch [ refresh-interval ] Monitor the local log for Shorewall
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# messages.
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# shorewall drop <address> ... Temporarily drop all packets from the
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# listed address(es)
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# shorewall reject <address> ... Temporarily reject all packets from the
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# listed address(es)
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# shorewall allow <address> ... Reenable address(es) previously
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# disabled with "drop" or "reject"
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# shorewall save [ <file> ] Save the list of "rejected" and
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# "dropped" addresses so that it will
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# be automatically reinstated the
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# next time that Shorewall starts.
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# Save the current state so that 'shorewall
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# restore' can be used.
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#
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# shorewall forget [ <file> ] Discard the data saved by 'shorewall save'
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#
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# shorewall restore [ <file> ] Restore the state of the firewall from
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# previously saved information.
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#
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# shorewall ipaddr [ <address>/<cidr> | <address> <netmask> ]
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#
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# Displays information about the network
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# defined by the argument[s]
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#
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# shorewall iprange <address>-<address> Decomposes a range of IP addresses into
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# a list of network/host addresses.
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#
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# shorewall safe-start Starts the firewall and promtp for a c
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# confirmation to accept or reject the new
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# configuration
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#
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# shorewall safe-restart Restarts the firewall and prompt for a
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# confirmation to accept or reject the new
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# configuration
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#
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# Fatal Error
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#
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fatal_error() # $@ = Message
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{
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echo " $@" >&2
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exit 2
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}
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# Display a chain if it exists
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#
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showfirstchain() # $1 = name of chain
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{
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awk \
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'BEGIN {prnt=0; rslt=1; }; \
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/^$/ { next; };\
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/^Chain/ {if ( prnt == 1 ) { rslt=0; exit 0; }; };\
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/Chain '$1'/ { prnt=1; }; \
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{ if (prnt == 1) print; };\
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END { exit rslt; }' $TMPFILE
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}
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showchain() # $1 = name of chain
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{
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if [ "$firstchain" = "Yes" ]; then
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if showfirstchain $1; then
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firstchain=
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fi
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else
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awk \
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'BEGIN {prnt=0;};\
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/^$|^ pkts/ { next; };\
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/^Chain/ {if ( prnt == 1 ) exit; };\
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/Chain '$1'/ { prnt=1; };\
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{ if (prnt == 1) print; }' $TMPFILE
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fi
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}
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#
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# The 'awk' hack that compensates for bugs in iptables-save (or rather in the extension modules).
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#
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iptablesbug()
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{
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if qt which awk ; then
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awk 'BEGIN {sline=""; };\
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/^-j/ { print sline $0; next };\
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/-m policy.*-j/ { print $0; next };\
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/-m policy/ { sline=$0; next };\
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/--mask ff/ { sub( /--mask ff/, "--mask 0xff" ) };\
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{print ; sline="" }'
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else
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echo " Warning: You don't have 'awk' on this system so the output of the save command may be unusable" >&2
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cat
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fi
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}
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#
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# Validate the value of RESTOREFILE
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#
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validate_restorefile() # $* = label
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{
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case $RESTOREFILE in
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*/*)
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echo " ERROR: $@ must specify a simple file name: $RESTOREFILE" >&2
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exit 2
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;;
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esac
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}
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#
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# Set the configuration variables from shorewall.conf
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#
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get_config() {
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[ -z "$LOGFILE" ] && LOGFILE=/var/log/messages
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if [ ! -f $LOGFILE ]; then
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echo "LOGFILE ($LOGFILE) does not exist!" >&2
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exit 2
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fi
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#
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# See if we have a real version of "tail" -- use separate redirection so
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# that ash (aka /bin/sh on LRP) doesn't crap
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#
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if ( tail -n5 $LOGFILE > /dev/null 2> /dev/null ) ; then
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realtail="Yes"
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else
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realtail=""
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fi
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[ -n "$FW" ] || FW=fw
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[ -n "LOGFORMAT" ] && LOGFORMAT="${LOGFORMAT%%%*}"
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[ -n "$LOGFORMAT" ] || LOGFORMAT="Shorewall:"
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if [ -n "$IPTABLES" ]; then
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if [ ! -e "$IPTABLES" ]; then
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echo " ERROR: The program specified in IPTABLES does not exist or is not executable" >&2
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exit 2
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fi
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else
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IPTABLES=$(which iptables 2> /dev/null)
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if [ -z "$IPTABLES" ] ; then
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echo " ERROR: Can't find iptables executable" >&2
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exit 2
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fi
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fi
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if [ -n "$SHOREWALL_SHELL" ]; then
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if [ ! -e "$SHOREWALL_SHELL" ]; then
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echo " ERROR: The program specified in SHOREWALL_SHELL does not exist or is not executable" >&2
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exit 2
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fi
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fi
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[ -n "$RESTOREFILE" ] || RESTOREFILE=restore
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validate_restorefile RESTOREFILE
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export RESTOREFILE
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}
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#
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# Clear descriptor 1 if it is a terminal
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#
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clear_term() {
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[ -t 1 ] && clear
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}
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#
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# Display IPTABLES rules -- we used to store them in a variable but ash
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# dies when trying to display large sets of rules
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#
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display_chains()
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{
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trap "rm -f /tmp/chains-$$; exit 1" 1 2 3 4 5 6 9
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if [ "$haveawk" = "Yes" ]; then
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#
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# Send the output to a temporary file since ash craps if we try to store
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# the output in a variable.
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#
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TMPFILE=$(mktempfile)
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[ -n "$TMPFILE" ] || { echo " ERROR:Cannot create temporary file" >&2; exit 1; }
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$IPTABLES -L $IPT_OPTIONS >> $TMPFILE
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clear_term
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echo "$banner $(date)"
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echo
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echo "Standard Chains"
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echo
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firstchain="Yes"
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showchain INPUT
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showchain OUTPUT
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showchain FORWARD
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timed_read
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clear_term
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echo "$banner $(date)"
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echo
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firstchain=Yes
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echo "Input Chains"
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echo
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chains=$(grep '^Chain.*_[in|fwd]' $TMPFILE | cut -d' ' -f 2)
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for chain in $chains; do
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showchain $chain
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done
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timed_read
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for zone in $zones; do
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if [ -n "$(grep "^Chain \.*${zone}" $TMPFILE)" ] ; then
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clear_term
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echo "$banner $(date)"
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echo
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firstchain=Yes
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eval display=\$${zone}_display
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echo "$display Chains"
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echo
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for zone1 in $FW $zones; do
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showchain ${zone}2$zone1
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showchain @${zone}2$zone1
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[ "$zone" != "$zone1" ] && \
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showchain ${zone1}2${zone} && \
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showchain @${zone1}2${zone}
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done
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timed_read
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fi
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done
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clear_term
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echo "$banner $(date)"
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echo
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firstchain=Yes
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echo "Policy Chains"
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echo
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showchain common
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showchain badpkt
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showchain icmpdef
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showchain rfc1918
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showchain blacklst
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showchain reject
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showchain newnotsyn
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for zone in $zones all; do
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showchain ${zone}2all
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showchain @${zone}2all
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[ "$zone" = "all" ] || { showchain all2${zone}; showchain @all2${zone}; }
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done
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timed_read
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clear_term
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echo "$banner $(date)"
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echo
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firstchain=Yes
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echo "Dynamic Chain"
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echo
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showchain dynamic
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timed_read
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qt rm -f $TMPFILE
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else
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$IPTABLES -L -n -v
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timed_read
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fi
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trap - 1 2 3 4 5 6 9
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}
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#
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# Delay $timeout seconds -- if we're running on a recent bash2 then allow
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# <enter> to terminate the delay
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#
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timed_read ()
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{
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read -t $timeout foo 2> /dev/null
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test $? -eq 2 && sleep $timeout
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}
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#
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# Display the last $1 packets logged
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#
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packet_log() # $1 = number of messages
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{
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local options
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[ -n "$realtail" ] && options="-n$1"
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if [ -n "$VERBOSE" ]; then
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grep "${LOGFORMAT}" $LOGFILE | \
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sed s/" kernel:"// | \
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sed s/" $host $LOGFORMAT"/" "/ | \
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tail $options
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else
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grep "${LOGFORMAT}" $LOGFILE | \
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sed s/" kernel:"// | \
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sed s/" $host $LOGFORMAT"/" "/ | \
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sed 's/MAC=.* SRC=/SRC=/' | \
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tail $options
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fi
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}
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#
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# Show traffic control information
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#
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show_tc() {
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show_one_tc() {
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local device=${1%@*}
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qdisc=$(tc qdisc list dev $device)
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if [ -n "$qdisc" ]; then
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echo Device $device:
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tc -s -d qdisc show dev $device
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tc -s -d class show dev $device
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echo
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fi
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}
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ip link list | \
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while read inx interface details; do
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case $inx in
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[0-9]*)
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show_one_tc ${interface%:}
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;;
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*)
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;;
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esac
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done
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}
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#
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# Show classifier information
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#
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show_classifiers() {
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show_one_classifier() {
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local device=${1%@*}
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qdisc=$(tc qdisc list dev $device)
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if [ -n "$qdisc" ]; then
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echo Device $device:
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tc -s filter ls dev $device
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echo
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fi
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}
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ip link list | \
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while read inx interface details; do
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case $inx in
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[0-9]*)
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show_one_classifier ${interface%:}
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;;
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*)
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;;
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esac
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done
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}
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#
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# Monitor the Firewall
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#
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monitor_firewall() # $1 = timeout -- if negative, prompt each time that
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# an 'interesting' packet count changes
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{
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host=$(echo $HOSTNAME | sed 's/\..*$//')
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oldrejects=$($IPTABLES -L -v -n | grep 'LOG')
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if [ $1 -lt 0 ]; then
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let "timeout=- $1"
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pause="Yes"
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else
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pause="No"
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timeout=$1
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fi
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if qt which awk; then
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TMP_DIR=$(mktempdir)
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[ -n "$TMP_DIR" ] || { echo " ERROR:Cannot create temporary directory" >&2; exit 1; }
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haveawk=Yes
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determine_zones
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rm -rf $TMP_DIR
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else
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haveawk=
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fi
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while true; do
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display_chains
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clear_term
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echo "$banner $(date)"
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echo
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echo "Dropped/Rejected Packet Log"
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echo
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show_reset
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rejects=$($IPTABLES -L -v -n | grep 'LOG')
|
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|
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if [ "$rejects" != "$oldrejects" ]; then
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oldrejects="$rejects"
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|
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$RING_BELL
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packet_log 20
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|
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if [ "$pause" = "Yes" ]; then
|
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echo
|
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echo $ECHO_N 'Enter any character to continue: '
|
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read foo
|
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else
|
||
timed_read
|
||
fi
|
||
else
|
||
echo
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||
packet_log 20
|
||
timed_read
|
||
fi
|
||
|
||
clear_term
|
||
echo "$banner $(date)"
|
||
echo
|
||
echo "NAT Status"
|
||
echo
|
||
$IPTABLES -t nat -L $IPT_OPTIONS
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||
timed_read
|
||
|
||
clear_term
|
||
echo "$banner $(date)"
|
||
echo
|
||
echo
|
||
echo "TOS/MARK Status"
|
||
echo
|
||
$IPTABLES -t mangle -L $IPT_OPTIONS
|
||
timed_read
|
||
|
||
clear_term
|
||
echo "$banner $(date)"
|
||
echo
|
||
echo
|
||
echo "Tracked Connections"
|
||
echo
|
||
cat /proc/net/ip_conntrack
|
||
timed_read
|
||
|
||
clear_term
|
||
echo "$banner $(date)"
|
||
echo
|
||
echo
|
||
echo "Traffic Shaping/Control"
|
||
echo
|
||
show_tc
|
||
timed_read
|
||
|
||
clear_term
|
||
echo "$banner $(date)"
|
||
echo
|
||
echo
|
||
echo "Packet Classifiers"
|
||
echo
|
||
show_classifiers
|
||
timed_read
|
||
done
|
||
}
|
||
|
||
#
|
||
# Watch the Firewall Log
|
||
#
|
||
logwatch() # $1 = timeout -- if negative, prompt each time that
|
||
# an 'interesting' packet count changes
|
||
{
|
||
|
||
host=$(echo $HOSTNAME | sed 's/\..*$//')
|
||
oldrejects=$($IPTABLES -L -v -n | grep 'LOG')
|
||
|
||
if [ $1 -lt 0 ]; then
|
||
timeout=$((- $1))
|
||
pause="Yes"
|
||
else
|
||
pause="No"
|
||
timeout=$1
|
||
fi
|
||
|
||
qt which awk && haveawk=Yes || haveawk=
|
||
|
||
while true; do
|
||
clear_term
|
||
echo "$banner $(date)"
|
||
echo
|
||
|
||
echo "Dropped/Rejected Packet Log"
|
||
echo
|
||
|
||
show_reset
|
||
|
||
rejects=$($IPTABLES -L -v -n | grep 'LOG')
|
||
|
||
if [ "$rejects" != "$oldrejects" ]; then
|
||
oldrejects="$rejects"
|
||
|
||
$RING_BELL
|
||
|
||
packet_log 40
|
||
|
||
if [ "$pause" = "Yes" ]; then
|
||
echo
|
||
echo $ECHO_N 'Enter any character to continue: '
|
||
read foo
|
||
else
|
||
timed_read
|
||
fi
|
||
else
|
||
echo
|
||
packet_log 40
|
||
timed_read
|
||
fi
|
||
done
|
||
}
|
||
|
||
#
|
||
# Save currently running configuration
|
||
#
|
||
save_config() {
|
||
[ "$nolock" ] || mutex_on
|
||
|
||
if qt $IPTABLES -L shorewall -n; then
|
||
[ -d /var/lib/shorewall ] || mkdir -p /var/lib/shorewall
|
||
|
||
if [ -f $RESTOREPATH -a ! -x $RESTOREPATH ]; then
|
||
echo " ERROR: $RESTOREPATH exists and is not a saved Shorewall configuration"
|
||
else
|
||
case $RESTOREFILE in
|
||
save|restore-base)
|
||
echo " ERROR: Reserved file name: $RESTOREFILE"
|
||
;;
|
||
*)
|
||
if $IPTABLES -L dynamic -n > /var/lib/shorewall/save; then
|
||
echo " Dynamic Rules Saved"
|
||
if [ -f /var/lib/shorewall/restore-base ]; then
|
||
cp -f /var/lib/shorewall/restore-base /var/lib/shorewall/restore-$$
|
||
if iptables-save | iptablesbug >> /var/lib/shorewall/restore-$$ ; then
|
||
echo __EOF__ >> /var/lib/shorewall/restore-$$
|
||
[ -f /var/lib/shorewall/restore-tail ] && \
|
||
cat /var/lib/shorewall/restore-tail >> /var/lib/shorewall/restore-$$
|
||
mv -f /var/lib/shorewall/restore-$$ $RESTOREPATH
|
||
chmod +x $RESTOREPATH
|
||
echo " Currently-running Configuration Saved to $RESTOREPATH"
|
||
|
||
rm -f ${RESTOREPATH}-ipsets
|
||
|
||
case ${SAVE_IPSETS:-No} in
|
||
[Yy][Ee][Ss])
|
||
RESTOREPATH=${RESTOREPATH}-ipsets
|
||
|
||
f=/var/lib/shorewall/restore-$$
|
||
|
||
echo "#!/bin/sh" > $f
|
||
echo "#This ipset restore file generated $(date) by Shorewall $version" >> $f
|
||
echo >> $f
|
||
echo ". /usr/share/shorewall/functions" >> $f
|
||
echo >> $f
|
||
grep '^MODULE' /var/lib/shorewall/restore-base >> $f
|
||
echo "reload_kernel_modules << __EOF__" >> $f
|
||
grep 'loadmodule ip_set' /var/lib/shorewall/restore-base >> $f
|
||
echo "__EOF__" >> $f
|
||
echo >> $f
|
||
echo "ipset -U :all: :all:" >> $f
|
||
echo "ipset -F" >> $f
|
||
echo "ipset -X" >> $f
|
||
echo "ipset -R << __EOF__" >> $f
|
||
ipset -S >> $f
|
||
echo "__EOF__" >> $f
|
||
mv -f $f $RESTOREPATH
|
||
chmod +x $RESTOREPATH
|
||
echo " Current Ipset Contents Saved to $RESTOREPATH"
|
||
;;
|
||
[Nn][Oo])
|
||
;;
|
||
*)
|
||
echo " WARNING: Invalid value ($SAVE_IPSETS) for SAVE_IPSETS. Ipset contents not saved"
|
||
;;
|
||
esac
|
||
else
|
||
rm -f /var/lib/shorewall/restore-$$
|
||
echo " ERROR: Currently-running Configuration Not Saved"
|
||
fi
|
||
else
|
||
echo " ERROR: /var/lib/shorewall/restore-base does not exist"
|
||
fi
|
||
else
|
||
echo "Error Saving the Dynamic Rules"
|
||
fi
|
||
;;
|
||
esac
|
||
fi
|
||
else
|
||
echo "Shorewall isn't started"
|
||
fi
|
||
|
||
[ "$nolock" ] || mutex_off
|
||
}
|
||
#
|
||
# Help information
|
||
#
|
||
help()
|
||
{
|
||
[ -x $HELP ] && { export version; exec $HELP $*; }
|
||
echo "Help subsystem is not installed at $HELP"
|
||
}
|
||
|
||
#
|
||
# Give Usage Information
|
||
#
|
||
usage() # $1 = exit status
|
||
{
|
||
echo "Usage: $(basename $0) [debug|trace] [nolock] [ -x ] [ -q ] [ -f ] [ -v ] <command>"
|
||
echo "where <command> is one of:"
|
||
echo " add <interface>[:{<bridge-port>[:<host>]|<host>}[,...]] ... <zone>"
|
||
echo " allow <address> ..."
|
||
echo " check [ <directory> ]"
|
||
echo " clear"
|
||
echo " delete <interface>[:{<bridge-port>[:<host>]|<host>}[,...]] ... <zone>"
|
||
echo " drop <address> ..."
|
||
echo " forget [ <file name> ]"
|
||
echo " help [ <command > | host | address ]"
|
||
echo " hits"
|
||
echo " ipcalc [ <address>/<vlsm> | <address> <netmask> ]"
|
||
echo " iprange <address>-<address>"
|
||
echo " logwatch [<refresh interval>]"
|
||
echo " monitor [<refresh interval>]"
|
||
echo " refresh"
|
||
echo " reject <address> ..."
|
||
echo " reset"
|
||
echo " restart [ <directory> ]"
|
||
echo " restore [ <file name> ]"
|
||
echo " save [ <file name> ]"
|
||
echo " show [<chain> [ <chain> ... ]|capabilities|classifiers|connections|log|nat|tc|tos|zones]"
|
||
echo " start [ <directory> ]"
|
||
echo " stop"
|
||
echo " status"
|
||
echo " try <directory> [ <timeout> ]"
|
||
echo " version"
|
||
echo " safe-start"
|
||
echo " safe-restart"
|
||
echo
|
||
exit $1
|
||
}
|
||
|
||
#
|
||
# Display the time that the counters were last reset
|
||
#
|
||
show_reset() {
|
||
[ -f $STATEDIR/restarted ] && \
|
||
echo "Counters reset $(cat $STATEDIR/restarted)" && \
|
||
echo
|
||
}
|
||
|
||
#
|
||
# Display's the passed file name followed by "=" and the file's contents.
|
||
#
|
||
show_proc() # $1 = name of a file
|
||
{
|
||
[ -f $1 ] && echo " $1 = $(cat $1)"
|
||
}
|
||
|
||
read_yesno_with_timeout() {
|
||
read -t 60 yn 2> /dev/null
|
||
if [ $? -eq 2 ]
|
||
then
|
||
# read doesn't support timeout
|
||
test -x /bin/bash || return 2 # bash is not installed so the feature is not available
|
||
/bin/bash -c 'read -t 60 yn ; if [ "$yn" == "y" ] ; then exit 0 ; else exit 1 ; fi' # invoke bash and use its version of read
|
||
return $?
|
||
else
|
||
# read supports timeout
|
||
case "$yn" in
|
||
y|Y)
|
||
return 0
|
||
;;
|
||
*)
|
||
return 1
|
||
;;
|
||
esac
|
||
fi
|
||
}
|
||
|
||
#
|
||
# Execution begins here
|
||
#
|
||
debugging=
|
||
|
||
if [ $# -gt 0 ] && [ "$1" = "debug" -o "$1" = "trace" ]; then
|
||
debugging=debug
|
||
shift
|
||
fi
|
||
|
||
nolock=
|
||
|
||
if [ $# -gt 0 ] && [ "$1" = "nolock" ]; then
|
||
nolock=nolock
|
||
shift
|
||
fi
|
||
|
||
SHOREWALL_DIR=
|
||
QUIET=
|
||
IPT_OPTIONS="-nv"
|
||
FAST=
|
||
VERBOSE=
|
||
|
||
done=0
|
||
|
||
while [ $done -eq 0 ]; do
|
||
[ $# -eq 0 ] && usage 1
|
||
option=$1
|
||
case $option in
|
||
-*)
|
||
option=${option#-}
|
||
|
||
[ -z "$option" ] && usage 1
|
||
|
||
while [ -n "$option" ]; do
|
||
case $option in
|
||
c)
|
||
[ $# -eq 1 ] && usage 1
|
||
|
||
if [ ! -d $2 ]; then
|
||
if [ -e $2 ]; then
|
||
echo "$2 is not a directory" >&2 && exit 2
|
||
else
|
||
echo "Directory $2 does not exist" >&2 && exit 2
|
||
fi
|
||
fi
|
||
|
||
SHOREWALL_DIR=$2
|
||
option=
|
||
shift
|
||
;;
|
||
x*)
|
||
IPT_OPTIONS="-xnv"
|
||
option=${option#x}
|
||
;;
|
||
q*)
|
||
QUIET=Yes
|
||
option=${option#q}
|
||
;;
|
||
f*)
|
||
FAST=Yes
|
||
option=${option#f}
|
||
;;
|
||
v*)
|
||
VERBOSE=Yes
|
||
option=${option#v}
|
||
;;
|
||
*)
|
||
usage 1
|
||
;;
|
||
esac
|
||
done
|
||
shift
|
||
;;
|
||
*)
|
||
done=1
|
||
;;
|
||
esac
|
||
done
|
||
|
||
if [ $# -eq 0 ]; then
|
||
usage 1
|
||
fi
|
||
|
||
[ -n "$SHOREWALL_DIR" ] && export SHOREWALL_DIR
|
||
[ -n "$QUIET" ] && export QUIET
|
||
|
||
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
|
||
MUTEX_TIMEOUT=
|
||
|
||
SHARED_DIR=/usr/share/shorewall
|
||
FIREWALL=$SHARED_DIR/firewall
|
||
FUNCTIONS=$SHARED_DIR/functions
|
||
VERSION_FILE=$SHARED_DIR/version
|
||
HELP=$SHARED_DIR/help
|
||
|
||
if [ -f $FUNCTIONS ]; then
|
||
. $FUNCTIONS
|
||
else
|
||
echo "$FUNCTIONS does not exist!" >&2
|
||
exit 2
|
||
fi
|
||
|
||
ensure_config_path
|
||
|
||
config=$(find_file shorewall.conf)
|
||
|
||
if [ -f $config ]; then
|
||
if [ -r $config ]; then
|
||
. $config
|
||
else
|
||
echo "Cannot read $config! (Hint: Are you root?)" >&2
|
||
exit 1
|
||
fi
|
||
else
|
||
echo "$config does not exist!" >&2
|
||
exit 2
|
||
fi
|
||
|
||
ensure_config_path
|
||
|
||
export CONFIG_PATH
|
||
|
||
get_config
|
||
|
||
[ -z "${STATEDIR}" ] && STATEDIR=/var/state/shorewall
|
||
|
||
if [ ! -f $FIREWALL ]; then
|
||
echo "ERROR: Shorewall is not properly installed"
|
||
if [ -L $FIREWALL ]; then
|
||
echo " $FIREWALL is a symbolic link to a"
|
||
echo " non-existant file"
|
||
else
|
||
echo " The file $FIREWALL does not exist"
|
||
fi
|
||
|
||
exit 2
|
||
fi
|
||
|
||
if [ -f $VERSION_FILE ]; then
|
||
version=$(cat $VERSION_FILE)
|
||
else
|
||
echo "ERROR: Shorewall is not properly installed"
|
||
echo " The file $VERSION_FILE does not exist"
|
||
exit 1
|
||
fi
|
||
|
||
banner="Shorewall-$version Status at $HOSTNAME -"
|
||
|
||
case $(echo -e) in
|
||
-e*)
|
||
RING_BELL="echo \a"
|
||
;;
|
||
*)
|
||
RING_BELL="echo -e \a"
|
||
;;
|
||
esac
|
||
|
||
case $(echo -n "Testing") in
|
||
-n*)
|
||
ECHO_N=
|
||
;;
|
||
*)
|
||
ECHO_N=-n
|
||
;;
|
||
esac
|
||
|
||
case "$1" in
|
||
start)
|
||
case $# in
|
||
1)
|
||
;;
|
||
2)
|
||
[ -n "$SHOREWALL_DIR" -o -n "$FAST" ] && usage 2
|
||
|
||
if [ ! -d $2 ]; then
|
||
if [ -e $2 ]; then
|
||
echo "$2 is not a directory" >&2 && exit 2
|
||
else
|
||
echo "Directory $2 does not exist" >&2 && exit 2
|
||
fi
|
||
fi
|
||
|
||
SHOREWALL_DIR=$2
|
||
export SHOREWALL_DIR
|
||
;;
|
||
*)
|
||
usage 1
|
||
;;
|
||
esac
|
||
|
||
if [ -n "$FAST" ]; then
|
||
|
||
RESTOREPATH=/var/lib/shorewall/$RESTOREFILE
|
||
|
||
if [ -x $RESTOREPATH ]; then
|
||
if [ -x ${RESTOREPATH}-ipsets ]; then
|
||
echo Restoring Ipsets...
|
||
#
|
||
# We must purge iptables to be sure that there are no
|
||
# references to ipsets
|
||
#
|
||
iptables -F
|
||
iptables -X
|
||
${RESTOREPATH}-ipsets
|
||
fi
|
||
|
||
echo Restoring Shorewall...
|
||
$RESTOREPATH
|
||
date > $STATEDIR/restarted
|
||
echo Shorewall restored from $RESTOREPATH
|
||
else
|
||
exec $SHOREWALL_SHELL $FIREWALL $debugging $nolock start
|
||
fi
|
||
else
|
||
exec $SHOREWALL_SHELL $FIREWALL $debugging $nolock start
|
||
fi
|
||
;;
|
||
stop|reset|clear|refresh)
|
||
[ $# -ne 1 ] && usage 1
|
||
exec $SHOREWALL_SHELL $FIREWALL $debugging $nolock $1
|
||
;;
|
||
check|restart)
|
||
case $# in
|
||
1)
|
||
;;
|
||
2)
|
||
[ -n "$SHOREWALL_DIR" ] && usage 2
|
||
|
||
if [ ! -d $2 ]; then
|
||
if [ -e $2 ]; then
|
||
echo "$2 is not a directory" >&2 && exit 2
|
||
else
|
||
echo "Directory $2 does not exist" >&2 && exit 2
|
||
fi
|
||
fi
|
||
|
||
SHOREWALL_DIR=$2
|
||
export SHOREWALL_DIR
|
||
;;
|
||
*)
|
||
usage 1
|
||
;;
|
||
esac
|
||
exec $SHOREWALL_SHELL $FIREWALL $debugging $nolock $1
|
||
;;
|
||
add|delete)
|
||
[ $# -lt 3 ] && usage 1
|
||
exec $SHOREWALL_SHELL $FIREWALL $debugging $nolock $@
|
||
;;
|
||
show|list)
|
||
[ -n "$debugging" ] && set -x
|
||
case "$2" in
|
||
connections)
|
||
[ $# -gt 2 ] && usage 1
|
||
echo "Shorewall-$version Connections at $HOSTNAME - $(date)"
|
||
echo
|
||
cat /proc/net/ip_conntrack
|
||
;;
|
||
nat)
|
||
[ $# -gt 2 ] && usage 1
|
||
echo "Shorewall-$version NAT at $HOSTNAME - $(date)"
|
||
echo
|
||
show_reset
|
||
$IPTABLES -t nat -L $IPT_OPTIONS
|
||
;;
|
||
tos|mangle)
|
||
[ $# -gt 2 ] && usage 1
|
||
echo "Shorewall-$version TOS at $HOSTNAME - $(date)"
|
||
echo
|
||
show_reset
|
||
$IPTABLES -t mangle -L $IPT_OPTIONS
|
||
;;
|
||
log)
|
||
[ $# -gt 2 ] && usage 1
|
||
echo "Shorewall-$version Log at $HOSTNAME - $(date)"
|
||
echo
|
||
show_reset
|
||
host=$(echo $HOSTNAME | sed 's/\..*$//')
|
||
packet_log 20
|
||
;;
|
||
tc)
|
||
[ $# -gt 2 ] && usage 1
|
||
echo "Shorewall-$version Traffic Control at $HOSTNAME - $(date)"
|
||
echo
|
||
show_tc
|
||
;;
|
||
classifiers)
|
||
[ $# -gt 2 ] && usage 1
|
||
echo "Shorewall-$version Clasifiers at $HOSTNAME - $(date)"
|
||
echo
|
||
show_classifiers
|
||
;;
|
||
zones)
|
||
[ $# -gt 2 ] && usage 1
|
||
[ -z "${STATEDIR}" ] && STATEDIR=/var/state/shorewall
|
||
if [ -f $STATEDIR/zones ]; then
|
||
echo "Shorewall-$version Zones at $HOSTNAME - $(date)"
|
||
echo
|
||
while read zone hosts; do
|
||
echo $zone
|
||
for host in $hosts; do
|
||
echo " $host"
|
||
done
|
||
done < $STATEDIR/zones
|
||
echo
|
||
else
|
||
echo " ERROR: $STATEDIR/zones does not exist" >&2
|
||
exit 1
|
||
fi
|
||
;;
|
||
capabilities)
|
||
exec $SHOREWALL_SHELL $FIREWALL $debugging $nolock capabilities
|
||
;;
|
||
*)
|
||
shift
|
||
|
||
echo "Shorewall-$version $([ $# -gt 1 ] && echo Chains || echo Chain) $* at $HOSTNAME - $(date)"
|
||
echo
|
||
show_reset
|
||
if [ $# -gt 0 ]; then
|
||
for chain in $*; do
|
||
$IPTABLES -L $chain $IPT_OPTIONS
|
||
done
|
||
else
|
||
$IPTABLES -L $IPT_OPTIONS
|
||
fi
|
||
;;
|
||
esac
|
||
;;
|
||
monitor)
|
||
[ -n "$debugging" ] && set -x
|
||
if [ $# -eq 2 ]; then
|
||
monitor_firewall $2
|
||
elif [ $# -eq 1 ]; then
|
||
monitor_firewall 30
|
||
else
|
||
usage 1
|
||
fi
|
||
;;
|
||
status)
|
||
[ -n "$debugging" ] && set -x
|
||
[ $# -eq 1 ] || usage 1
|
||
clear_term
|
||
echo "Shorewall-$version Status at $HOSTNAME - $(date)"
|
||
echo
|
||
show_reset
|
||
host=$(echo $HOSTNAME | sed 's/\..*$//')
|
||
$IPTABLES -L $IPT_OPTIONS
|
||
echo
|
||
packet_log 20
|
||
echo
|
||
echo "NAT Table"
|
||
echo
|
||
$IPTABLES -t nat -L $IPT_OPTIONS
|
||
echo
|
||
echo "Mangle Table"
|
||
echo
|
||
$IPTABLES -t mangle -L $IPT_OPTIONS
|
||
echo
|
||
cat /proc/net/ip_conntrack
|
||
echo
|
||
echo "IP Configuration"
|
||
echo
|
||
ip addr ls
|
||
echo
|
||
echo "IP Stats"
|
||
echo
|
||
ip -stat link ls
|
||
|
||
if qt which brctl; then
|
||
echo
|
||
echo "Bridges"
|
||
echo
|
||
brctl show
|
||
fi
|
||
|
||
echo
|
||
echo "/proc"
|
||
echo
|
||
|
||
show_proc /proc/sys/net/ipv4/ip_forward
|
||
show_proc /proc/sys/net/ipv4/icmp_echo_ignore_all
|
||
|
||
for directory in /proc/sys/net/ipv4/conf/*; do
|
||
for file in proxy_arp arp_filter rp_filter log_martians; do
|
||
show_proc $directory/$file
|
||
done
|
||
done
|
||
|
||
if [ -n "$(ip rule ls)" ]; then
|
||
echo
|
||
echo "Routing Rules"
|
||
echo
|
||
ip rule ls
|
||
ip rule ls | while read rule; do
|
||
table=${rule##* }
|
||
echo
|
||
echo "Table $table:"
|
||
echo
|
||
ip route ls table $table
|
||
done
|
||
else
|
||
echo
|
||
echo "Routing Table"
|
||
echo
|
||
ip route ls
|
||
fi
|
||
|
||
echo
|
||
echo "ARP"
|
||
echo
|
||
arp -na
|
||
|
||
if qt which lsmod; then
|
||
echo
|
||
echo "Modules"
|
||
echo
|
||
lsmod | grep -E '^ip_|^ipt_'
|
||
fi
|
||
;;
|
||
hits)
|
||
[ -n "$debugging" ] && set -x
|
||
[ $# -eq 1 ] || usage 1
|
||
clear_term
|
||
echo "Shorewall-$version Hits at $HOSTNAME - $(date)"
|
||
echo
|
||
|
||
timeout=30
|
||
|
||
if [ $(grep -c "$LOGFORMAT" $LOGFILE ) -gt 0 ] ; then
|
||
echo " HITS IP DATE"
|
||
echo " ---- --------------- ------"
|
||
grep "$LOGFORMAT" $LOGFILE | sed 's/\(.\{6\}\)\(.*SRC=\)\(.*\)\( DST=.*\)/\3 \1/' | sort | uniq -c | sort -rn
|
||
echo ""
|
||
|
||
echo " HITS IP PORT"
|
||
echo " ---- --------------- -----"
|
||
grep "$LOGFORMAT" $LOGFILE | sed 's/\(.*SRC=\)\(.*\)\( DST=.*DPT=\)\([0-9]\{1,5\}\)\(.*\)/\2 \4/
|
||
t
|
||
s/\(.*SRC=\)\(.*\)\( DST=.*\)/\2/' | sort | uniq -c | sort -rn
|
||
echo ""
|
||
|
||
echo " HITS DATE"
|
||
echo " ---- ------"
|
||
grep "$LOGFORMAT" $LOGFILE | sed 's/\(.\{6\}\)\(.*\)/\1/' | sort | uniq -c | sort -rn
|
||
echo ""
|
||
|
||
echo " HITS PORT SERVICE(S)"
|
||
echo " ---- ----- ----------"
|
||
grep "$LOGFORMAT.*DPT" $LOGFILE | sed 's/\(.*DPT=\)\([0-9]\{1,5\}\)\(.*\)/\2/' | sort | uniq -c | sort -rn | \
|
||
while read count port ; do
|
||
# List all services defined for the given port
|
||
srv=$(grep "^[^#].*\\b$port/" /etc/services | cut -f 1 | sort -u)
|
||
srv=$(echo $srv | sed 's/ /,/g')
|
||
|
||
if [ -n "$srv" ] ; then
|
||
printf '%7d %5d %s\n' $count $port $srv
|
||
else
|
||
printf '%7d %5d\n' $count $port
|
||
fi
|
||
done
|
||
fi
|
||
;;
|
||
version)
|
||
echo $version
|
||
;;
|
||
try)
|
||
[ -n "$SHOREWALL_DIR" ] && startup_error "Error: -c option may not be used with \"try\""
|
||
[ $# -lt 2 -o $# -gt 3 ] && usage 1
|
||
if ! $0 $debugging -c $2 restart; then
|
||
if ! $IPTABLES -L shorewall > /dev/null 2> /dev/null; then
|
||
$0 start
|
||
fi
|
||
elif ! $IPTABLES -L shorewall > /dev/null 2> /dev/null; then
|
||
$0 start
|
||
elif [ $# -eq 3 ]; then
|
||
sleep $3
|
||
$0 restart
|
||
fi
|
||
;;
|
||
logwatch)
|
||
[ -n "$debugging" ] && set -x
|
||
if [ $# -eq 2 ]; then
|
||
logwatch $2
|
||
elif [ $# -eq 1 ]; then
|
||
logwatch 30
|
||
else
|
||
usage 1
|
||
fi
|
||
;;
|
||
drop)
|
||
[ -n "$debugging" ] && set -x
|
||
[ $# -eq 1 ] && usage 1
|
||
mutex_on
|
||
while [ $# -gt 1 ]; do
|
||
shift
|
||
qt $IPTABLES -D dynamic -s $1 -j reject
|
||
qt $IPTABLES -D dynamic -s $1 -j DROP
|
||
$IPTABLES -A dynamic -s $1 -j DROP || break 1
|
||
echo "$1 Dropped"
|
||
done
|
||
mutex_off
|
||
;;
|
||
reject)
|
||
[ -n "$debugging" ] && set -x
|
||
[ $# -eq 1 ] && usage 1
|
||
mutex_on
|
||
while [ $# -gt 1 ]; do
|
||
shift
|
||
qt $IPTABLES -D dynamic -s $1 -j reject
|
||
qt $IPTABLES -D dynamic -s $1 -j DROP
|
||
$IPTABLES -A dynamic -s $1 -j reject || break 1
|
||
echo "$1 Rejected"
|
||
done
|
||
mutex_off
|
||
;;
|
||
allow)
|
||
[ -n "$debugging" ] && set -x
|
||
[ $# -eq 1 ] && usage 1
|
||
mutex_on
|
||
while [ $# -gt 1 ]; do
|
||
shift
|
||
if qt $IPTABLES -D dynamic -s $1 -j reject || qt $IPTABLES -D dynamic -s $1 -j DROP; then
|
||
echo "$1 Allowed"
|
||
else
|
||
echo "$1 Not Dropped or Rejected"
|
||
fi
|
||
done
|
||
mutex_off
|
||
;;
|
||
save)
|
||
[ -n "$debugging" ] && set -x
|
||
|
||
case $# in
|
||
1)
|
||
;;
|
||
2)
|
||
RESTOREFILE="$2"
|
||
validate_restorefile '<restore file>'
|
||
;;
|
||
*)
|
||
usage 1
|
||
;;
|
||
esac
|
||
|
||
RESTOREPATH=/var/lib/shorewall/$RESTOREFILE
|
||
|
||
save_config
|
||
|
||
;;
|
||
forget)
|
||
case $# in
|
||
1)
|
||
;;
|
||
2)
|
||
RESTOREFILE="$2"
|
||
validate_restorefile '<restore file>'
|
||
;;
|
||
*)
|
||
usage 1
|
||
;;
|
||
esac
|
||
|
||
|
||
RESTOREPATH=/var/lib/shorewall/$RESTOREFILE
|
||
|
||
if [ -x $RESTOREPATH ]; then
|
||
|
||
if [ -x ${RESTOREPATH}-ipsets ]; then
|
||
rm -f ${RESTOREPATH}-ipsets
|
||
echo " ${RESTOREPATH}-ipsets removed"
|
||
fi
|
||
|
||
rm -f $RESTOREPATH
|
||
echo " $RESTOREPATH removed"
|
||
elif [ -f $RESTOREPATH ]; then
|
||
echo " $RESTOREPATH exists and is not a saved Shorewall configuration"
|
||
fi
|
||
;;
|
||
ipcalc)
|
||
[ -n "$debugging" ] && set -x
|
||
if [ $# -eq 2 ]; then
|
||
address=${2%/*}
|
||
vlsm=${2#*/}
|
||
elif [ $# -eq 3 ]; then
|
||
address=$2
|
||
vlsm=$(ip_vlsm $3)
|
||
else
|
||
usage 1
|
||
fi
|
||
|
||
[ -z "$vlsm" ] && exit 2
|
||
[ "x$address" = "x$vlsm" ] && usage 2
|
||
[ $vlsm -gt 32 ] && echo "Invalid VLSM: /$vlsm" >&2 && exit 2
|
||
|
||
address=$address/$vlsm
|
||
|
||
echo " CIDR=$address"
|
||
temp=$(ip_netmask $address); echo " NETMASK=$(encodeaddr $temp)"
|
||
temp=$(ip_network $address); echo " NETWORK=$temp"
|
||
temp=$(broadcastaddress $address); echo " BROADCAST=$temp"
|
||
;;
|
||
|
||
iprange)
|
||
[ -n "$debugging" ] && set -x
|
||
case $2 in
|
||
*.*.*.*-*.*.*.*)
|
||
ip_range $2
|
||
;;
|
||
*)
|
||
usage 1
|
||
;;
|
||
esac
|
||
;;
|
||
restore)
|
||
case $# in
|
||
1)
|
||
;;
|
||
2)
|
||
RESTOREFILE="$2"
|
||
validate_restorefile '<restore file>'
|
||
;;
|
||
*)
|
||
usage 1
|
||
;;
|
||
esac
|
||
|
||
RESTOREPATH=/var/lib/shorewall/$RESTOREFILE
|
||
|
||
if [ -x $RESTOREPATH ]; then
|
||
if [ -x ${RESTOREPATH}-ipsets ] ; then
|
||
echo Restoring Ipsets...
|
||
iptables -F
|
||
iptables -X
|
||
${RESTOREPATH}-ipsets
|
||
fi
|
||
|
||
echo Restoring Shorewall...
|
||
$RESTOREPATH && echo "Shorewall restored from /var/lib/shorewall/$RESTOREFILE"
|
||
else
|
||
echo "File /var/lib/shorewall/$RESTOREFILE: file not found"
|
||
exit 2
|
||
fi
|
||
;;
|
||
call)
|
||
[ -n "$debugging" ] && set -x
|
||
#
|
||
# Undocumented way to call functions in /usr/share/shorewall/functions directly
|
||
#
|
||
shift;
|
||
$@
|
||
;;
|
||
help)
|
||
shift
|
||
[ $# -ne 1 ] && usage 1
|
||
help $@
|
||
;;
|
||
safe-restart|safe-start)
|
||
# test is the shell supports timed read
|
||
read -t 0 2> /dev/null
|
||
if [ $? -eq 2 -a ! -x /bin/bash ]
|
||
then
|
||
echo "Your shell does not support a feature required to execute this command".
|
||
exit 2
|
||
fi
|
||
|
||
mutex_on
|
||
|
||
if qt $IPTABLES -L shorewall -n
|
||
then
|
||
running=0
|
||
else
|
||
running=1
|
||
fi
|
||
|
||
if [ "$1" = "safe-start" -a $running -eq 0 ]
|
||
then
|
||
# the command is safe-start but the firewall is already running
|
||
$0 nolock $debugging start
|
||
ret=$?
|
||
exit 0
|
||
fi
|
||
|
||
if [ "$1" = "safe-start" -o $running -ne 0 ]
|
||
then
|
||
# the command is safe-start or shorewall is not started yet
|
||
command="start"
|
||
else
|
||
# the command is safe-restart and the firewall is already running
|
||
command="restart"
|
||
fi
|
||
|
||
if [ "$command" = "restart" ]
|
||
then
|
||
# save previous configuration
|
||
$0 nolock $debugging save "safe-start-restart"
|
||
fi
|
||
|
||
$0 nolock $debugging $command
|
||
|
||
echo -n "Do you want to accept the new firewall configuration? [y/n] "
|
||
read_yesno_with_timeout
|
||
if [ $? -eq 0 ]
|
||
then
|
||
echo "New configuration has been accepted"
|
||
if [ "$command" = "restart" ]
|
||
then
|
||
# removed previous configuration
|
||
rm /var/lib/shorewall/safe-start-restart
|
||
fi
|
||
else
|
||
if [ "$command" = "restart" ]
|
||
then
|
||
$0 nolock $debugging restore "safe-start-restart"
|
||
rm /var/lib/shorewall/safe-start-restart
|
||
else
|
||
$0 nolock $debugging clear
|
||
fi
|
||
|
||
mutex_off
|
||
echo "New configuration has been rejected and the old one restored"
|
||
exit 2
|
||
fi
|
||
|
||
mutex_off
|
||
[ $? -eq 0 ] && [ -n "$SUBSYSLOCK" ] && touch $SUBSYSLOCK
|
||
;;
|
||
*)
|
||
usage 1
|
||
;;
|
||
|
||
esac
|