57 lines
1.2 KiB
Plaintext
57 lines
1.2 KiB
Plaintext
*filter
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:INPUT DROP [0:0]
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:FORWARD DROP [0:0]
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:OUTPUT ACCEPT [0:0]
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# allow established connections
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-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
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-A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
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# allow traffic from private LAN
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-A INPUT -i eth1 -j ACCEPT
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-A FORWARD -i eth1 -j ACCEPT
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# allow icmp
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-A INPUT -p icmp -j ACCEPT
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# allow loopback
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-A INPUT -i lo -j ACCEPT
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# uni subnets
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:uni - [0:0]
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-A INPUT -s 141.30.0.0/16 -j uni
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-A INPUT -s 141.76.0.0/16 -j uni
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# reject unknown traffic with nice errors
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-A INPUT -p tcp -j REJECT --reject-with tcp-reset
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-A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable
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-A INPUT -j REJECT --reject-with icmp-proto-unreachable
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# ---------------------------------------------------------------
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# internal traffic
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#
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:internal - [0:0]
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-A uni -j internal
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-A internal -p tcp --dport 22 -j ACCEPT
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# ---------------------------------------------------------------
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# public traffic
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:public - [0:0]
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-A INPUT -j public
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# ---------------------------------------------------------------
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COMMIT
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*nat
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:PREROUTING ACCEPT [0:0]
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:POSTROUTING ACCEPT [0:0]
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:OUTPUT ACCEPT [0:0]
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# masquerading
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-A POSTROUTING -o eth0 -j MASQUERADE
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COMMIT
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