FAQ Search Today's Posts Mark Forums Read
» Video Reviews

» Linux Archive

Linux-archive is a website aiming to archive linux email lists and to make them easily accessible for linux users/developers.

» Sponsor

» Partners

» Sponsor

Go Back   Linux Archive > Debian > Debian User

LinkBack Thread Tools
Old 01-01-2009, 09:42 PM
Default iptables problem with two diffrent subnet

hi all, with iptables I've create
this script(see below or here http://pastebin.com/m416d8f6d)
for this specific situation:

In the eth2 lan work as I wish because pc can access to internet only
with proxy at port 8080; the problem also in the eth1 and here I want to
access directly using Nat and grant some services to specific ports

thanks in advance

.... iptables script ....

# delete all existing rules.
iptables -F
iptables -t nat -F
iptables -t mangle -F
iptables -X

# DEFAULT policies
iptables -P INPUT DROP
iptables -P FORWARD DROP

# Always accept loopback traffic
iptables -A INPUT -i lo -j ACCEPT

# Allow established connections, and those not coming from the outside
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
#iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
# alternativa
iptables -A FORWARD -i eth0 -o eth1 -m state --state ESTABLISHED,RELATED

# eth1 open ports
iptables -A INPUT -i eth1 -p tcp --dport 22 -j ACCEPT
iptables -A INPUT -i eth1 -p tcp --dport 80 -j ACCEPT
iptables -A INPUT -i eth1 -p tcp --dport 443 -j ACCEPT
iptables -A INPUT -i eth1 -p tcp --dport 8080 -j ACCEPT

iptables -A INPUT -i eth1 -p tcp --dport 25 -j ACCEPT
iptables -A INPUT -i eth1 -p tcp --dport 110 -j ACCEPT
iptables -A INPUT -i eth1 -p tcp --dport 115 -j ACCEPT
iptables -A INPUT -i eth1 -p tcp --dport 995 -j ACCEPT

# eth2 open ports
iptables -A INPUT -i eth2 -p tcp --dport 22 -j ACCEPT
iptables -A INPUT -i eth2 -p tcp --dport 8080 -j ACCEPT

# enable ping
iptables -A INPUT -p icmp -m icmp --icmp-type echo-reply -j ACCEPT
iptables -A INPUT -p icmp -m icmp --icmp-type 8 -m limit --limit 1/sec

# Masquerade.
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

# to allow ip forwarding
echo 1 > /proc/sys/net/ipv4/ip_forward

To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org

Thread Tools

All times are GMT. The time now is 11:47 AM.

VBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2007, Crawlability, Inc.
Copyright 2007 - 2008, www.linux-archive.org