77 lines
2.8 KiB
Plaintext
77 lines
2.8 KiB
Plaintext
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*nat
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-A POSTROUTING -s 10.10.10.0/24 -o eth0 -m policy --pol ipsec --dir out -j ACCEPT
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-A POSTROUTING -s 10.10.10.0/24 -o eth0 -j MASQUERADE
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COMMIT
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*mangle
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-A FORWARD --match policy --pol ipsec --dir in -s 10.10.10.0/24 -o eth0 -p tcp -m tcp --tcp-flags SYN,RST SYN -m tcpmss --mss 1361:1536 -j TCPMSS --set-mss 1360
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COMMIT
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# Don't delete these required lines, otherwise there will be errors
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*filter
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:ufw-before-input - [0:0]
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:ufw-before-output - [0:0]
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:ufw-before-forward - [0:0]
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:ufw-not-local - [0:0]
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# End required lines
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-A ufw-before-forward --match policy --pol ipsec --dir in --proto esp -s 10.10.10.0/24 -j ACCEPT
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-A ufw-before-forward --match policy --pol ipsec --dir out --proto esp -d 10.10.10.0/24 -j ACCEPT
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# allow all on loopback
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-A ufw-before-input -i lo -j ACCEPT
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-A ufw-before-output -o lo -j ACCEPT
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# quickly process packets for which we already have a connection
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-A ufw-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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-A ufw-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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-A ufw-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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# drop INVALID packets (logs these in loglevel medium and higher)
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-A ufw-before-input -m conntrack --ctstate INVALID -j ufw-logging-deny
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-A ufw-before-input -m conntrack --ctstate INVALID -j DROP
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# ok icmp codes for INPUT
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-A ufw-before-input -p icmp --icmp-type destination-unreachable -j ACCEPT
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-A ufw-before-input -p icmp --icmp-type time-exceeded -j ACCEPT
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-A ufw-before-input -p icmp --icmp-type parameter-problem -j ACCEPT
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-A ufw-before-input -p icmp --icmp-type echo-request -j ACCEPT
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# ok icmp code for FORWARD
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-A ufw-before-forward -p icmp --icmp-type destination-unreachable -j ACCEPT
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-A ufw-before-forward -p icmp --icmp-type time-exceeded -j ACCEPT
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-A ufw-before-forward -p icmp --icmp-type parameter-problem -j ACCEPT
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-A ufw-before-forward -p icmp --icmp-type echo-request -j ACCEPT
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# allow dhcp client to work
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-A ufw-before-input -p udp --sport 67 --dport 68 -j ACCEPT
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#
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# ufw-not-local
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#
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-A ufw-before-input -j ufw-not-local
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# if LOCAL, RETURN
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-A ufw-not-local -m addrtype --dst-type LOCAL -j RETURN
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# if MULTICAST, RETURN
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-A ufw-not-local -m addrtype --dst-type MULTICAST -j RETURN
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# if BROADCAST, RETURN
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-A ufw-not-local -m addrtype --dst-type BROADCAST -j RETURN
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# all other non-local packets are dropped
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-A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j ufw-logging-deny
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-A ufw-not-local -j DROP
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# allow MULTICAST mDNS for service discovery (be sure the MULTICAST line above
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# is uncommented)
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-A ufw-before-input -p udp -d 224.0.0.251 --dport 5353 -j ACCEPT
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# allow MULTICAST UPnP for service discovery (be sure the MULTICAST line above
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# is uncommented)
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-A ufw-before-input -p udp -d 239.255.255.250 --dport 1900 -j ACCEPT
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# don't delete the 'COMMIT' line or these rules won't be processed
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COMMIT
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