fw.sh

#!/bin/bash
#IPv4 Firewall
iptables -F
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -p icmp -j ACCEPT
iptables -A INPUT -i lo -j ACCEPT
#meow
iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT                   #HTTPd
iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT                   #SSH
iptables -A INPUT -m state --state NEW -m udp -p udp --dport 60000:61000 -j ACCEPT          #Mosh
iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 1723 -j ACCEPT                 #pptpd
iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 6697 -j ACCEPT                 #znc
iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 5060:5061 -j ACCEPT            #sip-tcp
iptables -A INPUT -m state --state NEW -m udp -p udp --dport 5060:5061 -j ACCEPT            #sip
iptables -A INPUT -m state --state NEW -m udp -p udp --dport 4569 -j ACCEPT                 #iax
iptables -A INPUT -m state --state NEW -m udp -p udp --dport 16384:32767 -j ACCEPT          #rtp
iptables -A INPUT -m state --state NEW -m multiport -p tcp --dport 9091,51413 -j ACCEPT     #Transmission
#iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 25565 -j ACCEPT               #Minecraft
#iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 27960 -j ACCEPT               #Quake 3
#iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 64738 -j ACCEPT               #Mumble
#iptables -A INPUT -j DROP #Uncomment this and comment the next 4 lines to disable logging of dropped packets
iptables -N LOGGING
iptables -A INPUT -j LOGGING
iptables -A LOGGING -m limit --limit 2/min -j LOG --log-prefix "iptables-Dropped: " --log-level 4
iptables -A LOGGING -j DROP

#IPv6 Firewall
ip6tables -F
ip6tables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
ip6tables -A INPUT -p icmpv6 -j ACCEPT
ip6tables -A INPUT -i lo -j ACCEPT
#meow
ip6tables -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT                  #HTTPd
ip6tables -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT                  #SSH
ip6tables -A INPUT -m state --state NEW -m udp -p udp --dport 60000:61000 -j ACCEPT         #Mosh
ip6tables -A INPUT -m state --state NEW -m tcp -p tcp --dport 1723 -j ACCEPT                #pptpd
ip6tables -A INPUT -m state --state NEW -m tcp -p tcp --dport 6697 -j ACCEPT                #znc
ip6tables -A INPUT -m state --state NEW -m tcp -p tcp --dport 5060:5061 -j ACCEPT           #sip-tcp
ip6tables -A INPUT -m state --state NEW -m udp -p udp --dport 5060:5061 -j ACCEPT           #sip
ip6tables -A INPUT -m state --state NEW -m udp -p udp --dport 4569 -j ACCEPT                #iax
ip6tables -A INPUT -m state --state NEW -m udp -p udp --dport 16384:32767 -j ACCEPT         #rtp
ip6tables -A INPUT -m state --state NEW -m multiport -p tcp --dport 9091,51413 -j ACCEPT    #Transmission
#ip6tables -A INPUT -m state --state NEW -m tcp -p tcp --dport 25565 -j ACCEPT              #Minecraft
#ip6tables -A INPUT -m state --state NEW -m tcp -p tcp --dport 27960 -j ACCEPT              #Quake 3
#ip6tables -A INPUT -m state --state NEW -m tcp -p tcp --dport 64738 -j ACCEPT              #Mumble
#ip6tables -A INPUT -j DROP #Uncomment this and comment the next 4 lines to disable logging of dropped packets
ip6tables -N LOGGING
ip6tables -A INPUT -j LOGGING
ip6tables -A LOGGING -m limit --limit 2/min -j LOG --log-prefix "ip6tables-Dropped: " --log-level 4
ip6tables -A LOGGING -j DROP