mirror of
https://gitlab.com/shorewall/code.git
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Initial revision
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@115 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
This commit is contained in:
teastep
parent
e899d2a8ab
commit
aae9be6222
706
Lrp/sbin/shorewall
Executable file
706
Lrp/sbin/shorewall
Executable file
@ -0,0 +1,706 @@
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#!/bin/sh
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#
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# Shorewall Packet Filtering Firewall Control Program - V1.3 - 6/14/2002
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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 - Tom Eastep (teastep@shorewall.net)
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#
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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 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> Display the rules in a <chain>
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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 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 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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#
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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; }' /tmp/chains-$$
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}
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showchain() # $1 = name of chain
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{
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if [ "$firstchain" = "Yes" ]; then
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if showfirstchain $1; then
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firstchain=
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fi
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else
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awk \
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'BEGIN {prnt=0;};\
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/^$|^ pkts/ { next; };\
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/^Chain/ {if ( prnt == 1 ) exit; };\
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/Chain '$1'/ { prnt=1; };\
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{ if (prnt == 1) print; }' /tmp/chains-$$
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fi
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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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get_statedir
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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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}
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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-$$; exit 1" 1 2 3 4 5 6 9
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if [ "$haveawk" = "Yes" ]; then
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#
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# Send the output to a temporary file since ash craps if we try to store
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# the output in a variable.
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#
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iptables -L -n -v > /tmp/chains-$$
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clear
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echo -e "$banner `date`\\n"
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echo -e "Standard Chains\\n"
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firstchain="Yes"
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showchain INPUT
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showchain OUTPUT
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showchain FORWARD
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timed_read
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clear
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echo -e "$banner `date`\\n"
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firstchain=Yes
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echo -e "Input Chains\\n"
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chains=`grep '^Chain.*_[in|fwd]' /tmp/chains-$$ | cut -d' ' -f 2`
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for chain in $chains; do
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showchain $chain
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done
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timed_read
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for zone in $zones; do
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if [ -n "`grep "^Chain \.*${zone}" /tmp/chains-$$`" ] ; then
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clear
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echo -e "$banner `date`\\n"
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firstchain=Yes
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eval display=\$${zone}_display
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echo -e "$display Chains\\n"
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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
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echo -e "$banner `date`\\n"
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firstchain=Yes
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echo -e "Policy Chains\\n"
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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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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${zone}; }
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done
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timed_read
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clear
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echo -e "$banner `date`\\n"
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firstchain=Yes
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echo -e "Dynamic Chain\\n"
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showchain dynamic
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timed_read
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qt rm -f /tmp/chains-$$
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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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grep 'Shorewall:\|ipt_unclean' $LOGFILE | \
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sed s/" $host kernel: Shorewall:"/" "/ | \
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sed s/" $host kernel: ipt_unclean: "/" "/ | \
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sed 's/MAC=.*SRC=/SRC=/' | \
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tail $options
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}
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#################################################################################
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# Show traffic control information #
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#################################################################################
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show_tc() {
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show_one_tc() {
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local device=${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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# 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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get_config
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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=$1
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fi
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qt which awk && { haveawk=Yes; determine_zones; } || haveawk=
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while true; do
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display_chains
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clear
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echo -e "$banner `date`\\n"
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echo -e "Dropped/Rejected Packet Log\\n"
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rejects=`iptables -L -v -n | grep 'LOG'`
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if [ "$rejects" != "$oldrejects" ]; then
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oldrejects="$rejects"
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echo -e '\a'
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packet_log 20
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if [ "$pause" = "Yes" ]; then
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echo -en '\nEnter any character to continue: '
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read foo
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else
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timed_read
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fi
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else
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echo
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packet_log 20
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timed_read
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fi
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clear
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echo -e "$banner `date`\\n"
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echo -e "NAT Status\\n"
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iptables -t nat -L -n -v
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timed_read
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clear
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echo -e "$banner `date`\\n"
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echo -e "\\nTOS/MARK Status\\n"
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iptables -t mangle -L -n -v
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timed_read
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clear
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echo -e "$banner `date`\\n"
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echo -e "\\nTracked Connections\\n"
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cat /proc/net/ip_conntrack
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timed_read
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clear
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echo -e "$banner `date`\\n"
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echo -e "\\nTraffic Shaping/Control\\n"
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show_tc
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timed_read
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done
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}
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#################################################################################
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# Watch the Firewall Log #
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#################################################################################
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logwatch() # $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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||||
|
||||
get_config
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host=`echo $HOSTNAME | sed 's/\..*$//'`
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||||
oldrejects=`iptables -L -v -n | grep 'LOG'`
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||||
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||||
if [ $1 -lt 0 ]; then
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||||
timeout=$((- $1))
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pause="Yes"
|
||||
else
|
||||
pause="No"
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||||
timeout=$1
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||||
fi
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||||
|
||||
qt which awk && haveawk=Yes || haveawk=
|
||||
|
||||
while true; do
|
||||
clear
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||||
echo -e "$banner `date`\\n"
|
||||
|
||||
echo -e "Dropped/Rejected Packet Log\\n"
|
||||
|
||||
rejects=`iptables -L -v -n | grep 'LOG'`
|
||||
|
||||
if [ "$rejects" != "$oldrejects" ]; then
|
||||
oldrejects="$rejects"
|
||||
echo -e '\a'
|
||||
packet_log 40
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||||
|
||||
if [ "$pause" = "Yes" ]; then
|
||||
echo -en '\nEnter any character to continue: '
|
||||
read foo
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||||
else
|
||||
timed_read
|
||||
fi
|
||||
else
|
||||
echo
|
||||
packet_log 40
|
||||
timed_read
|
||||
fi
|
||||
done
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||||
}
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||||
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||||
#################################################################################
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||||
# Give Usage Information #
|
||||
#################################################################################
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||||
usage() # $1 = exit status
|
||||
{
|
||||
echo "Usage: `basename $0` [debug] [nolock] [-c <directory>] <command>"
|
||||
echo "where <command> is one of:"
|
||||
echo " show [<chain>|connections|log|nat|tc|tos]"
|
||||
echo " start"
|
||||
echo " stop"
|
||||
echo " reset"
|
||||
echo " restart"
|
||||
echo " status"
|
||||
echo " clear"
|
||||
echo " refresh"
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||||
echo " hits"
|
||||
echo " monitor [<refresh interval>]"
|
||||
echo " version"
|
||||
echo " check"
|
||||
echo " try <directory> [ <timeout> ]"
|
||||
echo " logwatch [<refresh interval>]"
|
||||
echo " drop <address> ..."
|
||||
echo " reject <address> ..."
|
||||
echo " allow <address> ..."
|
||||
echo " save"
|
||||
exit $1
|
||||
}
|
||||
|
||||
#################################################################################
|
||||
# Execution begins here #
|
||||
#################################################################################
|
||||
debugging=
|
||||
|
||||
if [ $# -gt 0 ] && [ "$1" = "debug" ]; then
|
||||
debugging=debug
|
||||
shift
|
||||
fi
|
||||
|
||||
nolock=
|
||||
|
||||
if [ $# -gt 0 ] && [ "$1" = "nolock" ]; then
|
||||
nolock=nolock
|
||||
shift
|
||||
fi
|
||||
|
||||
SHOREWALL_DIR=
|
||||
done=0
|
||||
|
||||
while [ $done -eq 0 ]; do
|
||||
[ $# -eq 0 ] && usage 1
|
||||
case $1 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
|
||||
shift
|
||||
shift
|
||||
;;
|
||||
*)
|
||||
done=1
|
||||
;;
|
||||
esac
|
||||
done
|
||||
|
||||
if [ $# -eq 0 ]; then
|
||||
usage 1
|
||||
fi
|
||||
|
||||
[ -n "$SHOREWALL_DIR" ] && export SHOREWALL_DIR
|
||||
|
||||
functions=/var/lib/shorewall/functions
|
||||
|
||||
if [ -f $functions ]; then
|
||||
. $functions
|
||||
else
|
||||
echo "$functions does not exist!" >&2
|
||||
exit 2
|
||||
fi
|
||||
|
||||
firewall=/var/lib/shorewall/firewall
|
||||
|
||||
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 /var/lib/shorewall/firewall does not exist"
|
||||
fi
|
||||
|
||||
exit 2
|
||||
fi
|
||||
|
||||
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
|
||||
|
||||
version_file=/var/lib/shorewall/version
|
||||
|
||||
if [ -f $version_file ]; then
|
||||
version=`cat $version_file`
|
||||
else
|
||||
echo "ERROR: Shorewall is not properly installed"
|
||||
echo " The file /var/lib/shorewall/version does not exist"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
banner="Shorewall-$version Status at $HOSTNAME -"
|
||||
|
||||
case "$1" in
|
||||
start|stop|restart|reset|clear|refresh|check)
|
||||
[ $# -ne 1 ] && usage 1
|
||||
exec $firewall $debugging $nolock $1
|
||||
;;
|
||||
show)
|
||||
[ $# -gt 2 ] && usage 1
|
||||
case "$2" in
|
||||
connections)
|
||||
echo -e "Shorewall-$version Connections at $HOSTNAME - `date`\\n"
|
||||
cat /proc/net/ip_conntrack
|
||||
;;
|
||||
nat)
|
||||
echo -e "Shorewall-$version NAT at $HOSTNAME - `date`\\n"
|
||||
iptables -t nat -L -n -v
|
||||
;;
|
||||
tos|mangle)
|
||||
echo -e "Shorewall-$version TOS at $HOSTNAME - `date`\\n"
|
||||
iptables -t mangle -L -n -v
|
||||
;;
|
||||
log)
|
||||
get_config
|
||||
echo -e "Shorewall-$version Log at $HOSTNAME - `date`\\n"
|
||||
host=`echo $HOSTNAME | sed 's/\..*$//'`
|
||||
packet_log 20
|
||||
;;
|
||||
tc)
|
||||
echo -e "Shorewall-$version Traffic Control at $HOSTNAME - `date`\\n"
|
||||
show_tc
|
||||
;;
|
||||
*)
|
||||
echo -e "Shorewall-$version Chain $2 at $HOSTNAME - `date`\\n"
|
||||
iptables -L $2 -n -v
|
||||
;;
|
||||
esac
|
||||
;;
|
||||
monitor)
|
||||
if [ $# -eq 2 ]; then
|
||||
monitor_firewall $2
|
||||
elif [ $# -eq 1 ]; then
|
||||
monitor_firewall 30
|
||||
else
|
||||
usage 1
|
||||
fi
|
||||
;;
|
||||
status)
|
||||
[ $# -eq 1 ] || usage 1
|
||||
get_config
|
||||
clear
|
||||
echo -e "Shorewall-$version Status at $HOSTNAME - `date`\\n"
|
||||
host=`echo $HOSTNAME | sed 's/\..*$//'`
|
||||
iptables -L -n -v
|
||||
echo
|
||||
packet_log 20
|
||||
echo
|
||||
iptables -t nat -L -n -v
|
||||
echo
|
||||
iptables -t mangle -L -n -v
|
||||
echo
|
||||
cat /proc/net/ip_conntrack
|
||||
;;
|
||||
hits)
|
||||
[ $# -eq 1 ] || usage 1
|
||||
get_config
|
||||
clear
|
||||
echo -e "Shorewall-$version Hits at $HOSTNAME - `date`\\n"
|
||||
timeout=30
|
||||
|
||||
if [ `grep -c "Shorewall:" $LOGFILE ` -gt 0 ] ; then
|
||||
echo " HITS IP DATE"
|
||||
echo " ---- --------------- ------"
|
||||
grep "Shorewall:" $LOGFILE | sed 's/\(.\{6\}\)\(.*SRC=\)\(.*\)\( DST=.*\)/\3 \1/' | sort | uniq -c | sort -rn
|
||||
echo ""
|
||||
|
||||
echo " HITS IP PORT"
|
||||
echo " ---- --------------- -----"
|
||||
grep "Shorewall:" $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 "Shorewall:" $LOGFILE | sed 's/\(.\{6\}\)\(.*\)/\1/' | sort | uniq -c | sort -rn
|
||||
echo ""
|
||||
|
||||
echo " HITS PORT SERVICE(S)"
|
||||
echo " ---- ----- ----------"
|
||||
grep 'Shorewall:.*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 -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)
|
||||
if [ $# -eq 2 ]; then
|
||||
logwatch $2
|
||||
elif [ $# -eq 1 ]; then
|
||||
logwatch 30
|
||||
else
|
||||
usage 1
|
||||
fi
|
||||
;;
|
||||
drop)
|
||||
[ $# -eq 1 ] && usage 1
|
||||
mutex_on
|
||||
while [ $# -gt 1 ]; do
|
||||
shift
|
||||
iptables -A dynamic -s $1 -j DROP || break 1
|
||||
echo "$1 Dropped"
|
||||
done
|
||||
mutex_off
|
||||
;;
|
||||
reject)
|
||||
[ $# -eq 1 ] && usage 1
|
||||
mutex_on
|
||||
while [ $# -gt 1 ]; do
|
||||
shift
|
||||
iptables -A dynamic -s $1 -j reject || break 1
|
||||
echo "$1 Rejected"
|
||||
done
|
||||
mutex_off
|
||||
;;
|
||||
allow)
|
||||
[ $# -eq 1 ] && usage 1
|
||||
mutex_on
|
||||
while [ $# -gt 1 ]; do
|
||||
shift
|
||||
if qt iptables -D dynamic -s $1 -j reject; then
|
||||
#
|
||||
# Address was rejected -- silently remove any drop as well
|
||||
#
|
||||
qt iptables -D dynamic -s $1 -j DROP
|
||||
echo "$1 Allowed"
|
||||
elif qt iptables -D dynamic -s $1 -j DROP; then
|
||||
echo "$1 Allowed"
|
||||
else
|
||||
echo "$1 Not Dropped or Rejected"
|
||||
fi
|
||||
done
|
||||
mutex_off
|
||||
;;
|
||||
save)
|
||||
[ $# -ne 1 ] && usage 1
|
||||
mutex_on
|
||||
if qt iptables -L shorewall -n; then
|
||||
if iptables -L dynamic -n > /var/lib/shorewall/save; then
|
||||
echo "Dynamic Rules Saved"
|
||||
else
|
||||
echo "Error Saving the Dynamic Rules"
|
||||
fi
|
||||
else
|
||||
echo "Shorewall isn't started"
|
||||
fi
|
||||
mutex_off
|
||||
;;
|
||||
*)
|
||||
usage 1
|
||||
;;
|
||||
esac
|
||||
Loading…
Reference in New Issue
Block a user