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Add firewall.

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This commit is contained in:
Darren 'Tadgy' Austin 2026-03-21 18:26:46 +00:00
commit 5e2fcbfb30
4 changed files with 214 additions and 157 deletions
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2
etc/firewall/.gitignore vendored Normal file
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/state_v4.rules
/state_v6.rules

22
etc/firewall/default_v4.rules Normal file
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# These rules are applied as the default firewall when there are no state rules to be applied.
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m conntrack --ctstate INVALID -j DROP
-A INPUT -i lo -j ACCEPT
-A INPUT -s 10.254.0.0/24 -i eth1 -j ACCEPT
-A INPUT -s 5.101.171.208/28 -i eth0 -j ACCEPT
-A INPUT -s 172.236.16.105/32 -i eth0 -j ACCEPT
-A INPUT -s 185.176.90.169/32 -i eth0 -j ACCEPT
-A INPUT -s 145.40.182.204/32 -i eth0 -j ACCEPT
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 0 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 3 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 11 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 12 -j ACCEPT
-A INPUT -p tcp -m multiport --dports 22,25422 -m conntrack --ctstate NEW -j ACCEPT
-A INPUT -p tcp -m tcp --dport 873 -m conntrack --ctstate NEW -j ACCEPT
-A INPUT -p tcp -m tcp --dport 25443 -m conntrack --ctstate NEW -j ACCEPT
COMMIT

24
etc/firewall/default_v6.rules Normal file
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# These rules are applied as the default firewall when there are no state rules to be applied.
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m conntrack --ctstate INVALID -j DROP
-A INPUT -i lo -j ACCEPT
-A INPUT -s 2a01:a500:2981:1::/64 -i eth0 -j ACCEPT
-A INPUT -s 2600:3c13::2000:50ff:fef4:7f56/128 -i eth0 -j ACCEPT
-A INPUT -s 2a07:4580:b0d:57f::169/128 -i eth0 -j ACCEPT
-A INPUT -s 2001:470:1f1d:58::/64 -i eth0 -j ACCEPT
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p ipv6-icmp -m icmp6 --icmpv6-type 128 -j ACCEPT
-A INPUT -p ipv6-icmp -m icmp6 --icmpv6-type 129 -j ACCEPT
-A INPUT -p ipv6-icmp -m icmp6 --icmpv6-type 1 -j ACCEPT
-A INPUT -p ipv6-icmp -m icmp6 --icmpv6-type 3 -j ACCEPT
-A INPUT -p ipv6-icmp -m icmp6 --icmpv6-type 4 -j ACCEPT
-A INPUT -p ipv6-icmp -m icmp6 --icmpv6-type 2 -j ACCEPT
-A INPUT -p ipv6-icmp -m icmp6 --icmpv6-type 135 -j ACCEPT
-A INPUT -p ipv6-icmp -m icmp6 --icmpv6-type 136 -j ACCEPT
-A INPUT -p tcp -m multiport --dports 22,25422 -m conntrack --ctstate NEW -j ACCEPT
-A INPUT -p tcp -m tcp --dport 873 -m conntrack --ctstate NEW -j ACCEPT
-A INPUT -p tcp -m tcp --dport 25443 -m conntrack --ctstate NEW -j ACCEPT
COMMIT