diff options
Diffstat (limited to 'package/base-files/default/etc/init.d/S45firewall')
-rwxr-xr-x | package/base-files/default/etc/init.d/S45firewall | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/package/base-files/default/etc/init.d/S45firewall b/package/base-files/default/etc/init.d/S45firewall deleted file mode 100755 index 8c67d82b18..0000000000 --- a/package/base-files/default/etc/init.d/S45firewall +++ /dev/null @@ -1,96 +0,0 @@ -#!/bin/sh - -## Please make changes in /etc/firewall.user -${FAILSAFE:+exit} - -. /etc/functions.sh -. /etc/network.overrides -[ "$FAILSAFE" != "true" -a -e /etc/config/network ] && . /etc/config/network - -WAN=$(nvram get wan_ifname) -LAN=$(nvram get lan_ifname) - -## CLEAR TABLES -for T in filter nat; do - iptables -t $T -F - iptables -t $T -X -done - -iptables -N input_rule -iptables -N output_rule -iptables -N forwarding_rule - -iptables -t nat -N prerouting_rule -iptables -t nat -N postrouting_rule - -### INPUT -### (connections with the router as destination) - - # base case - iptables -P INPUT DROP - iptables -A INPUT -m state --state INVALID -j DROP - iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT - iptables -A INPUT -p tcp --tcp-flags SYN SYN --tcp-option \! 2 -j DROP - - # - # insert accept rule or to jump to new accept-check table here - # - iptables -A INPUT -j input_rule - - # allow - iptables -A INPUT ${WAN:+-i \! $WAN} -j ACCEPT # allow from lan/wifi interfaces - iptables -A INPUT -p icmp -j ACCEPT # allow ICMP - iptables -A INPUT -p gre -j ACCEPT # allow GRE - - # reject (what to do with anything not allowed earlier) - iptables -A INPUT -p tcp -j REJECT --reject-with tcp-reset - iptables -A INPUT -j REJECT --reject-with icmp-port-unreachable - -### OUTPUT -### (connections with the router as source) - - # base case - iptables -P OUTPUT DROP - iptables -A OUTPUT -m state --state INVALID -j DROP - iptables -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT - - # - # insert accept rule or to jump to new accept-check table here - # - iptables -A OUTPUT -j output_rule - - # allow - iptables -A OUTPUT -j ACCEPT #allow everything out - - # reject (what to do with anything not allowed earlier) - iptables -A OUTPUT -p tcp -j REJECT --reject-with tcp-reset - iptables -A OUTPUT -j REJECT --reject-with icmp-port-unreachable - -### FORWARDING -### (connections routed through the router) - - # base case - iptables -P FORWARD DROP - iptables -A FORWARD -m state --state INVALID -j DROP - iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu - iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT - - # - # insert accept rule or to jump to new accept-check table here - # - iptables -A FORWARD -j forwarding_rule - - # allow - iptables -A FORWARD -i br0 -o br0 -j ACCEPT - [ -z "$WAN" ] || iptables -A FORWARD -i $LAN -o $WAN -j ACCEPT - - # reject (what to do with anything not allowed earlier) - # uses the default -P DROP - -### MASQ - iptables -t nat -A PREROUTING -j prerouting_rule - iptables -t nat -A POSTROUTING -j postrouting_rule - [ -z "$WAN" ] || iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE - -## USER RULES -[ -f /etc/firewall.user ] && . /etc/firewall.user |