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Change comment on SPT=0 trap

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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@375 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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teastep 2002-12-20 01:13:41 +00:00
parent 1c8b19cfe8
commit 43b6a8acc8
1 changed files with 3 additions and 3 deletions
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Shorewall/firewall
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@ -3532,9 +3532,9 @@ add_common_rules() {
run_iptables -A tcpflags -p tcp --tcp-flags SYN,RST SYN,RST $disposition
run_iptables -A tcpflags -p tcp --tcp-flags SYN,FIN SYN,FIN $disposition
#
# A Shorewall user reported seeing outgoing SYN ACK packets with DPT=0
# That prompted me to add the following which will stop an incoming
# SYN with SPT=0
# There are a lot of probes to ports 80, 3128 and 8080 that use a source
# port of 0. This catches them even if they are directed at an IP that
# hosts a web server.
#
run_iptables -A tcpflags -p tcp --syn --sport 0 $disposition