Bash | #!/bin/sh iptables -t nat -F - Transparent_proxysh - f4112ed23

#!/bin/sh
iptables -t nat -F  # clear table
iptables -t nat -X
iptables -t filter -F
iptables -t filter -X

# bypass laptop
iptables -t nat -A PREROUTING -p tcp -i eth1 -s 192.168.0.27 -j ACCEPT

# chains
iptables -t nat -N REDGUARDIAN
iptables -t nat -N REDSQUID

# normal transparent proxy
iptables -t nat -A PREROUTING -p tcp -i eth1 --dport 80 -j REDIRECT --to-port 8080
iptables -t nat -A PREROUTING -p tcp -i eth1 --dport 21 -j REDIRECT --to-port 2121

# handle connections on the same box (192.168.0.2 is a loopback instance)
gid=`id -g proxy`
dgid=`id -g dansguardian`
iptables -t nat -A OUTPUT -p tcp --dport 80 -m owner --gid-owner $gid  -j ACCEPT
iptables -t nat -A OUTPUT -p tcp --dport 80 -m owner --gid-owner $dgid -j ACCEPT
iptables -t nat -A OUTPUT -p tcp --dport 80 -m owner --gid-owner 1000 -j ACCEPT
iptables -t nat -A OUTPUT -p tcp --dport 80 -m owner --gid-owner 0 -j ACCEPT
iptables -t nat -A OUTPUT -p tcp --dport 21 -m owner --gid-owner $gid -j ACCEPT
iptables -t nat -A OUTPUT -p tcp -d 127.0.0.1 --dport 80 -j ACCEPT
iptables -t nat -A OUTPUT -p tcp -d 192.168.0.5 --dport 80 -j ACCEPT
iptables -t nat -A OUTPUT -p tcp -d 192.168.0.27 --dport 80 -j ACCEPT
iptables -t nat -A OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.1:3128
#iptables -t nat -A OUTPUT -p tcp --dport 80 -j DNAT --to-destination 192.168.0.1:8080
iptables -t nat -A OUTPUT -p tcp --dport 21 -j DNAT --to-destination 192.168.0.1:2121