NAT di IPCOP (Tanpa Proxy)

iptables -t nat -I PREROUTING -p tcp -d 196.38.248.0/24 -j ACCEPT
iptables -I FORWARD -p tcp -d 196.38.248.0/24 -j ACCEPT

And if work, place in rc.local or rc.firewall.local (/etc/rc.d/).
# allow bypass proxy
/sbin/iptables -t nat -I PREROUTING -p tcp -d 196.38.248.0/24 -j ACCEPT
/sbin/iptables -I FORWARD -p tcp -d 196.38.248.0/24 -j ACCEPT