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| author | Jo-Philipp Wich <jow@openwrt.org> | 2012-01-08 15:29:24 +0000 |
|---|---|---|
| committer | Jo-Philipp Wich <jow@openwrt.org> | 2012-01-08 15:29:24 +0000 |
| commit | 8094fa46da2d35632617ca1498148f7ad7483748 (patch) | |
| tree | ee0bd71439d92893dc8cfaaff3c2a0453c6777fb /package/firewall/files/lib | |
| parent | 97af76a92047a9034cd394e08c715949eea68837 (diff) | |
| download | mtk-20170518-8094fa46da2d35632617ca1498148f7ad7483748.zip mtk-20170518-8094fa46da2d35632617ca1498148f7ad7483748.tar.gz mtk-20170518-8094fa46da2d35632617ca1498148f7ad7483748.tar.bz2 | |
firewall: add support for "local" port forwards which target an internal address on the router itself
SVN-Revision: 29687
Diffstat (limited to 'package/firewall/files/lib')
| -rw-r--r-- | package/firewall/files/lib/core_redirect.sh | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/package/firewall/files/lib/core_redirect.sh b/package/firewall/files/lib/core_redirect.sh index a3e70d4..fe396c1 100644 --- a/package/firewall/files/lib/core_redirect.sh +++ b/package/firewall/files/lib/core_redirect.sh @@ -34,7 +34,17 @@ fw_load_redirect() { return 0 } - fwdchain="zone_${redirect_src}${redirect_dest_ip:+_forward}" + fwdopt="" + fwdchain="" + + # Check whether only ports are given or whether the given dest ip is local, + # in this case match only DNATed traffic and allow it on input, not forward + if [ -z "$redirect_dest_ip" ] || /sbin/ifconfig | grep -qE "addr:${redirect_dest_ip//./\\.}\b"; then + fwdopt="-m conntrack --ctstate DNAT" + fwdchain="zone_${redirect_src}" + else + fwdchain="zone_${redirect_src}_forward" + fi natopt="--to-destination" natchain="zone_${redirect_src}_prerouting" @@ -106,10 +116,11 @@ fw_load_redirect() { fw add $mode f ${fwdchain:-forward} ACCEPT + \ { $redirect_src_ip $redirect_dest_ip } { \ - $srcaddr ${destaddr:--m conntrack --ctstate DNAT} \ + $srcaddr $destaddr \ $pr \ $srcports $destports \ ${sm:+-m mac $sm} \ + $fwdopt \ $redirect_extra \ } done |