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# Generated by iptables-save v1.4.19.1 on Fri Oct 4 14:26:06 2013
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [2472:308226]
:LOGACCEPT - [0:0]
:LOGDROP - [0:0]
:LOGREJECT - [0:0]
:TCP - [0:0]
:UDP - [0:0]
:sshguard - [0:0]
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m conntrack --ctstate INVALID -j DROP
-A INPUT -p icmp -m icmp --icmp-type 8 -m conntrack --ctstate NEW -j ACCEPT
-A INPUT -p udp -m conntrack --ctstate NEW -j UDP
-A INPUT -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m conntrack --ctstate NEW -j TCP
-A INPUT -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "[rejecting in INPUT chain] "
-A INPUT -p udp -m recent --set --name UDP-PORTSCAN --mask 255.255.255.255 --rsource -j REJECT --reject-with icmp-port-unreachable
-A INPUT -p tcp -m recent --set --name TCP-PORTSCAN --mask 255.255.255.255 --rsource -j REJECT --reject-with tcp-reset
-A INPUT -j REJECT --reject-with icmp-proto-unreachable
-A FORWARD -o tun0 -j ACCEPT
-A LOGACCEPT -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "[accepting] "
-A LOGACCEPT -j ACCEPT
-A LOGDROP -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "[dropping] "
-A LOGDROP -j DROP
-A LOGREJECT -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "[rejecting] "
-A LOGREJECT -p tcp -j REJECT --reject-with tcp-reset
-A LOGREJECT -j REJECT --reject-with icmp-port-unreachable
-A TCP -p tcp -m recent --update --seconds 60 --name TCP-PORTSCAN --mask 255.255.255.255 --rsource -m comment --comment "when matched, this rsource has prev rcvd a RST" -j REJECT --reject-with tcp-reset
-A TCP -s 172.16.1.0/24 -p tcp -j ACCEPT
-A TCP -s 192.168.1.0/24 -p tcp -m tcp --dport 22 -j ACCEPT
-A TCP -p tcp -m multiport --dports 22 -j sshguard
-A TCP -p tcp -m tcp --dport 22 -m conntrack --ctstate NEW -m recent --set --name SSHLIST --mask 255.255.255.255 --rsource
-A TCP -p tcp -m tcp --dport 22 -m conntrack --ctstate NEW -m recent --update --seconds 30 --hitcount 4 --name SSHLIST --mask 255.255.255.255 --rsource -m comment --comment "in case sshguard malfunctions" -j LOGDROP
-A TCP -p tcp -m tcp --dport 22 -j ACCEPT
-A TCP -p tcp -m tcp --dport 12101:12110 -j ACCEPT
-A UDP -p udp -m recent --update --seconds 60 --name UDP-PORTSCAN --mask 255.255.255.255 --rsource -m comment --comment "when matched, this rsource has prev rcvd unreachable port" -j REJECT --reject-with icmp-port-unreachable
-A UDP -s 172.16.1.0/24 -p udp -j ACCEPT
-A UDP -p udp -m udp --dport 12101:12110 -j ACCEPT
COMMIT
# Completed on Fri Oct 4 14:26:06 2013
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