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| author | Jo-Philipp Wich <jow@openwrt.org> | 2011-07-01 11:48:14 +0000 |
|---|---|---|
| committer | Jo-Philipp Wich <jow@openwrt.org> | 2011-07-01 11:48:14 +0000 |
| commit | df14a48dc9c9d48b65f669e4b8e7307e571eeddf (patch) | |
| tree | 793bf58fc48ef721529a0808228faaac4f0a3be6 /package/firewall/files/reflection.hotplug | |
| parent | be9a11b014a93aa8a326912b1c7122828c664fb1 (diff) | |
| download | upstream-df14a48dc9c9d48b65f669e4b8e7307e571eeddf.tar.gz upstream-df14a48dc9c9d48b65f669e4b8e7307e571eeddf.tar.bz2 upstream-df14a48dc9c9d48b65f669e4b8e7307e571eeddf.zip | |
firewall: properly handle negated ports in nat reflection
SVN-Revision: 27334
Diffstat (limited to 'package/firewall/files/reflection.hotplug')
| -rw-r--r-- | package/firewall/files/reflection.hotplug | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/package/firewall/files/reflection.hotplug b/package/firewall/files/reflection.hotplug index 4fd8f296de..7ab4c5fe81 100644 --- a/package/firewall/files/reflection.hotplug +++ b/package/firewall/files/reflection.hotplug @@ -91,23 +91,31 @@ if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then [ "${inthost#!}" = "$inthost" ] || return 0 [ "${exthost#!}" = "$exthost" ] || return 0 + [ "${epmin#!}" != "$epmin" ] && \ + extport="! --dport ${epmin#!}${epmax:+:$epmax}" || \ + extport="--dport $epmin${epmax:+:$epmax}" + + [ "${ipmin#!}" != "$ipmin" ] && \ + intport="! --dport ${ipmin#!}${ipmax:+:$ipmax}" || \ + intport="--dport $ipmin${ipmax:+:$ipmax}" + local p for p in ${proto:-tcp udp}; do case "$p" in tcp|udp) iptables -t nat -A nat_reflection_in \ -s $lanip/$lanmk -d $exthost \ - -p $p --dport $epmin${epmax:+:$epmax} \ - -j DNAT --to $inthost:$ipmin${ipmax:+-$ipmax} + -p $p $extport \ + -j DNAT --to $inthost:${ipmin#!}${ipmax:+-$ipmax} iptables -t nat -A nat_reflection_out \ -s $lanip/$lanmk -d $inthost \ - -p $p --dport $ipmin${ipmax:+:$ipmax} \ + -p $p $intport \ -j SNAT --to-source $lanip iptables -t filter -A nat_reflection_fwd \ -s $lanip/$lanmk -d $inthost \ - -p $p --dport $ipmin${ipmax:+:$ipmax} \ + -p $p $intport \ -j ACCEPT ;; esac |