From 304d5c8845273000cd84ee4a25ec6542a5ee94d8 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 29 Oct 2007 10:31:16 +0000 Subject: [PATCH] Only masquerade non routable addresses (#2535) SVN-Revision: 9460 --- package/iptables/files/firewall.init | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/package/iptables/files/firewall.init b/package/iptables/files/firewall.init index 388c5b4f91..9d8a405ab0 100755 --- a/package/iptables/files/firewall.init +++ b/package/iptables/files/firewall.init @@ -105,7 +105,10 @@ start() { iptables -t nat -A PREROUTING -j prerouting_rule [ -z "$WAN" ] || iptables -t nat -A PREROUTING -i "$WAN" -j prerouting_wan iptables -t nat -A POSTROUTING -j postrouting_rule - [ -z "$WAN" ] || iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE + ### Only RFC1918 addresses + [ -z "$WAN" ] || iptables -t nat -A POSTROUTING --src 192.168.0.0/16 -o $WAN -j MASQUERADE + [ -z "$WAN" ] || iptables -t nat -A POSTROUTING --src 172.16.0.0/12 -o $WAN -j MASQUERADE + [ -z "$WAN" ] || iptables -t nat -A POSTROUTING --src 10.0.0.0/8 -o $WAN -j MASQUERADE iptables -t nat -A NEW -m limit --limit 50 --limit-burst 100 -j RETURN && \ iptables -t nat -A NEW -j DROP -- 2.30.2