forked from extern/shorewall_code
Add OLD_PING_HANDLING option
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@406 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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teastep
parent
3b29150cb2
commit
7fe133fe4a
@ -1,10 +1,5 @@
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Changes since 1.3.12
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Changes since 1.3.13
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1. Added 'DNAT-' target.
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2. Print policies in 'check' command.
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3. Added CLEAR_TC option.
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4. Added SHARED_DIR option.
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1. Fix 'shorewall add' bug.
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2. Add OLD_PING_HANDLING option
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@ -599,12 +599,16 @@ validate_interfaces_file() {
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for option in $options; do
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case $option in
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dhcp|noping|filterping|routestopped|norfc1918|multi|tcpflags)
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;;
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routefilter|dropunclean|logunclean|blacklist|proxyarp|maclist|-)
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;;
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*)
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error_message "Warning: Invalid option ($option) in record \"$r\""
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dhcp|routestopped|norfc1918|multi|tcpflags)
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;;
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routefilter|dropunclean|logunclean|blacklist|proxyarp|maclist|-)
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;;
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noping|filterping)
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[ -n "$OLD_PING_HANDLING" ] || \
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startup_error "Option $option only allowed with old ping handling"
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;;
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*)
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error_message "Warning: Invalid option ($option) in record \"$r\""
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;;
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esac
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done
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@ -3350,11 +3354,14 @@ initialize_netfilter () {
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# Build the common chain -- called during [re]start and refresh
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#
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build_common_chain() {
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#
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# PING
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#
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[ -n "$FORWARDPING" ] && \
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run_iptables -A icmpdef -p icmp --icmp-type echo-request -j ACCEPT
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if [ -n "$OLD_PING_HANDLING" ]; then
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#
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# PING
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#
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[ -n "$FORWARDPING" ] && \
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run_iptables -A icmpdef -p icmp --icmp-type echo-request -j ACCEPT
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fi
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#
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# Common ICMP rules
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#
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@ -3907,23 +3914,25 @@ define_firewall() # $1 = Command (Start or Restart)
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process_rules $rules
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echo "Setting up ICMP Echo handling..."
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if [ -n "$OLD_PING_HANDLING" ]; then
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echo "Setting up ICMP Echo handling..."
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filterping_interfaces="`find_interfaces_by_option filterping`"
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noping_interfaces="`find_interfaces_by_option noping`"
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filterping_interfaces="`find_interfaces_by_option filterping`"
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noping_interfaces="`find_interfaces_by_option noping`"
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for interface in $all_interfaces; do
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if ! list_search $interface $filterping_interfaces; then
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if list_search $interface $noping_interfaces; then
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target=DROP
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else
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target=ACCEPT
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for interface in $all_interfaces; do
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if ! list_search $interface $filterping_interfaces; then
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if list_search $interface $noping_interfaces; then
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target=DROP
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else
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target=ACCEPT
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fi
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run_iptables -A `input_chain $interface` \
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-p icmp --icmp-type echo-request -j $target
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fi
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run_iptables -A `input_chain $interface` \
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-p icmp --icmp-type echo-request -j $target
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fi
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done
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done
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fi
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policy=`find_file policy`
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@ -4471,6 +4480,7 @@ do_initialize() {
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TCP_FLAGS_LOG_LEVEL=
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RFC1918_LOG_LEVEL=
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MARK_IN_FORWARD_CHAIN=
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OLD_PING_HANDLING=
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SHARED_DIR=/usr/lib/shorewall
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FUNCTIONS=
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VERSION_FILE=
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@ -4596,7 +4606,7 @@ do_initialize() {
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else
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CLEAR_TC=
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fi
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OLD_PING_HANDLING=`added_param_value_yes OLD_PING_HANDLING $OLD_PING_HANDLING`
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run_user_exit params
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@ -2,48 +2,14 @@ This is a minor release of Shorewall that has a couple of new features.
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New features include:
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1) A new 'DNAT-' action has been added for entries in the
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/etc/shorewall/rules file. DNAT- is intended for advanced users who
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wish to minimize the number of rules that connection requests must
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traverse.
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1) An OLD_PING_HANDLING option has been added to shorewall.conf. When
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set to Yes, Shorewall ping handling is as it has always been (see
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http://www.shorewall.net/ping.html).
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A Shorewall DNAT rule actually generates two iptables rules: a
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header rewriting rule in the 'nat' table and an ACCEPT rule in the
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'filter' table. A DNAT- rule only generates the first of these
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rules. This is handy when you have several DNAT rules that would
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generate the same ACCEPT rule.
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When OLD_PING_HANDLING=No, icmp echo (ping) is handled via rules and
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policies just like any other connection request. The FORWARDPING
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option in shorewall.conf is ignored and the 'noping' and
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'filterping' options in /etc/shorewall/interfaces will generate an
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error.
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Here are three rules from my previous rules file:
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DNAT net dmz:206.124.146.177 tcp smtp - 206.124.146.178
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DNAT net dmz:206.124.146.177 tcp smtp - 206.124.146.179
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ACCEPT net dmz:206.124.146.177 tcp www,smtp,ftp,...
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These three rules ended up generating _three_ copies of
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ACCEPT net dmz:206.124.146.177 tcp smtp
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By writing the rules this way, I end up with only one copy of the
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ACCEPT rule.
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DNAT- net dmz:206.124.146.177 tcp smtp - 206.124.146.178
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DNAT- net dmz:206.124.146.177 tcp smtp - 206.124.146.179
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ACCEPT net dmz:206.124.146.177 tcp www,smtp,ftp,...
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2) The 'shorewall check' command now prints out the applicable policy
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between each pair of zones.
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3. A new CLEAR_TC option has been added to shorewall.conf. If this
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option is set to 'No' then Shorewall won't clear the current
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traffic control rules during [re]start. This setting is intended
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for use by people that prefer to configure traffic shaping when
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the network interfaces come up rather than when the firewall
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is started. If that is what you want to do, set TC_ENABLED=Yes and
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CLEAR_TC=No and do not supply an /etc/shorewall/tcstart file. That
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way, your traffic shaping rules can still use the 'fwmark'
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classifier based on packet marking defined in /etc/shorewall/tcrules.
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4. A new SHARED_DIR variable has been added that allows distribution
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packagers to easily move the shared directory (default
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/usr/lib/shorewall). Users should never have a need to change the
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value of this shorewall.conf setting.
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@ -400,11 +400,21 @@ MUTEX_TIMEOUT=60
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LOGNEWNOTSYN=
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#
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# Old Ping Handling
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#
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# If this option is set to "Yes" then Shorewall will use its old ping handling
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# facility including the FORWARDPING option below and the 'noping' and
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# 'filterping' interface options. If this option is set to 'No' then ping
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# is handled via policy and rules just like any other connection request.
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#
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OLD_PING_HANDLING=No
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#
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# Forward "Ping"
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#
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# If FORWARDPING is set to "Yes" then Echo Request ("Ping") packets are
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# forwarded by the firewall.
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# forwarded by the firewall. This option is only used if OLD_PING_HANDLING=Yes
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FORWARDPING=Yes
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