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Add missing nat table returns

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This commit is contained in:
Daniel Winzen
2021-08-13 21:29:00 +02:00
parent 23b5514989
commit 14b0e475e9
1 changed files with 15 additions and 11 deletions
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26
etc/rc.local
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@ -24,18 +24,22 @@ iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
ip6tables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
#allow tor traffic
for tor in bind debian-tor _tor-a _tor-b _tor-c _tor-d _tor-e _tor-f _tor-g _tor-h _tor-i _tor-j _tor-k _tor-l _tor-m _tor-n _tor-o _tor-p _tor-q _tor-r _tor-s; do(
iptables -t nat -A OUTPUT -m owner --uid-owner $tor -j RETURN;
ip6tables -t nat -A OUTPUT -m owner --uid-owner $tor -j RETURN;
iptables -A OUTPUT -m owner --uid-owner $tor -j ACCEPT;
ip6tables -A OUTPUT -m owner --uid-owner $tor -j ACCEPT;
iptables -t nat -A OUTPUT -m owner --uid-owner $tor -j RETURN
ip6tables -t nat -A OUTPUT -m owner --uid-owner $tor -j RETURN
iptables -A OUTPUT -m owner --uid-owner $tor -j ACCEPT
ip6tables -A OUTPUT -m owner --uid-owner $tor -j ACCEPT
)done
#restrict local communication for hosting users
#allowed tcp ports
for port in 3306 9040 9050 110 143 25 22 53; do(
iptables -A OUTPUT -d 127.0.0.0/8 -p tcp --dport $port -m owner --gid-owner www-data -j ACCEPT;
iptables -t nat -A OUTPUT -d 127.0.0.0/8 -p tcp --dport $port -m owner --gid-owner www-data -j RETURN
ip6tables -t nat -A OUTPUT -d ::1 -p tcp --dport $port -m owner --gid-owner www-data -j RETURN
iptables -A OUTPUT -d 127.0.0.0/8 -p tcp --dport $port -m owner --gid-owner www-data -j ACCEPT
ip6tables -A OUTPUT -d ::1 -p tcp --dport $port -m owner --gid-owner www-data -j ACCEPT
)done
#accept DNS
iptables -t nat -A OUTPUT -d 127.0.0.0/8 -p udp --dport 53 -m owner --gid-owner www-data -j RETURN
ip6tables -t nat -A OUTPUT -d ::1 -p udp --dport 53 -m owner --gid-owner www-data -j RETURN
iptables -A OUTPUT -d 127.0.0.0/8 -p udp --dport 53 -m owner --gid-owner www-data -j ACCEPT
ip6tables -A OUTPUT -d ::1 -p udp --dport 53 -m owner --gid-owner www-data -j ACCEPT
#reject all other local communication
@ -55,19 +59,19 @@ iptables -A INPUT -i lo -j ACCEPT
ip6tables -A INPUT -i lo -j ACCEPT
#unrestricted access to these IPs
for clearnet in 127.0.0.0/8; do(
iptables -t nat -A OUTPUT -d $clearnet -j RETURN;
iptables -A OUTPUT -d $clearnet -j ACCEPT;
iptables -t nat -A OUTPUT -d $clearnet -j RETURN
iptables -A OUTPUT -d $clearnet -j ACCEPT
) done
for clearnet in ::1; do(
ip6tables -t nat -A OUTPUT -d $clearnet -j RETURN;
ip6tables -A OUTPUT -d $clearnet -j ACCEPT;
ip6tables -t nat -A OUTPUT -d $clearnet -j RETURN
ip6tables -A OUTPUT -d $clearnet -j ACCEPT
) done
#accet IPv6 ICMP packages required for SLAAC
ip6tables -A INPUT -p ipv6-icmp -j ACCEPT
ip6tables -A OUTPUT -p ipv6-icmp -j ACCEPT
#allow querriying ntp servers (must mach /etc/systemd/timesyncd.conf
for clearnet in 88.191.68.178 51.15.142.60 51.255.197.148 91.121.181.58; do(
iptables -t nat -A OUTPUT -p udp --dport 123 -d $clearnet -j RETURN;
iptables -t nat -A OUTPUT -p udp --dport 123 -d $clearnet -j RETURN
iptables -A OUTPUT -p udp --dport 123 -d $clearnet -j ACCEPT
)done
#redirect all outgoing DNS querries to our dns server
@ -82,7 +86,7 @@ ip6tables -A OUTPUT -j REJECT
#uncomment to be able to directly connect with your own IP and allow no one else
#for clearnet in YOUR_IP_HERE;do(
#iptables -A INPUT -s $clearnet -j ACCEPT;
#iptables -A INPUT -s $clearnet -j ACCEPT
#)done
#drop everything else (uncomment after adding your own IP above)
#iptables -A INPUT -j DROP