secnet_iptables/iptables.rules

*filter
:INPUT ACCEPT [139:11952]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [31:3232]

# Allow host ports
-A INPUT -p tcp --dport 22 -j ACCEPT
-A INPUT -p tcp --dport 53 -j ACCEPT
-A INPUT -p tcp --dport 80 -j ACCEPT
-A INPUT -p tcp --dport 13699 -j ACCEPT

# Standard Internal Traffic
-A INPUT -i lo -j ACCEPT
-A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT

# NAT Forwarding
-A FORWARD -i enp2s0.10 -o enp2s0.2 -j ACCEPT
-A FORWARD -i enp2s0.11 -o enp2s0.2 -j ACCEPT
-A FORWARD -i enp2s0.12 -o enp2s0.2 -j ACCEPT
-A FORWARD -i enp2s0.13 -o enp2s0.2 -j ACCEPT
-A FORWARD -i enp2s0.14 -o enp2s0.2 -j ACCEPT

# NAT Returns
-A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -m conntrack --ctstate INVALID -j DROP

# Drop weird shit
-A INPUT -p tcp -j DROP

COMMIT

*nat
:PREROUTING ACCEPT [12:835]
:INPUT ACCEPT [12:835]
:OUTPUT ACCEPT [1:104]
:POSTROUTING ACCEPT [0:0]

# General NAT Traffic
-A POSTROUTING -o enp2s0.2 -j MASQUERADE

COMMIT