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wan-firewall: fix and clean up 

- use -A (append) instead of -I (insert)
This makes shure the rule order is correct. This fixes #421.
- use uci to determine the correct wan interface
This is the reason, why #421 was only on wr1043. Now the firewall rule
applies to all router.
- remove old and not used rules

Signed-off-by: Tim Niemeyer <tim.niemeyer@mastersword.de>
This commit is contained in:
Tim Niemeyer 2012-11-17 18:16:33 +01:00
parent 92593b44cf
commit 3622ea8cb5
1 changed files with 4 additions and 43 deletions
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47
bsp/default/root_file_system/etc/firewall.user
View File

@ -1,50 +1,11 @@
#!/bin/sh
#iptables -F
#
#iptables -P INPUT DROP
#iptables -P OUTPUT DROP
#iptables -P FORWARD DROP
#
#for proto in tcp udp
#do
# for port in 53 666 655
# do
# iptables -A OUTPUT -p $proto --dport $port -j ACCEPT
# iptables -A OUTPUT -p $proto --sport $port -j ACCEPT
# iptables -A INPUT -p $proto --dport $port -j ACCEPT
# iptables -A INPUT -p $proto --sport $port -j ACCEPT
# done
#done
#
#iptables -A OUTPUT -p icmp -j ACCEPT
#iptables -A INPUT -p icmp -j ACCEPT
#
#iptables -A INPUT -p tcp --dport 22 -j ACCEPT
#iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
#
#
#iptables -A OUTPUT -p tcp --sport 1024: -j ACCEPT
#iptables -A OUTPUT -p udp --sport 1024: -j ACCEPT
# mastersword.de
#iptables -A OUTPUT -p tcp -d 78.46.215.78 -j ACCEPT
#iptables -A INPUT -p tcp -s 78.46.215.78 -j ACCEPT
# gw1.freifunk-ol.de
#iptables -A OUTPUT -p tcp -d 178.33.33.102 -j ACCEPT
#iptables -A INPUT -p tcp -s 178.33.33.102 -j ACCEPT
# freifunk-ol.de
#iptables -A OUTPUT -p tcp -d 178.33.33.208 -j ACCEPT
#iptables -A INPUT -p tcp -s 178.33.33.208 -j ACCEPT
#Masquerade interface for gateway
#iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
#solves MTU problem with bad ISP´s
iptables -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
# Wenn ein router direkt am Netz hängt, ist er auch ssh Angriffen ausgesetzt.
# Das wirkt bei kleinen Geräten wir ein DOS
iptables -I INPUT -i eth0.2 -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -I INPUT -i eth0.2 -j DROP
WAN=$(uci get network.wan.ifname)
iptables -A INPUT -i $WAN -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
iptables -A INPUT -i $WAN -j REJECT