Hello. I just installed slack instead of redhat as my primary server. I can't turn on the masquarade. The config file is the same as the one from redhat exept iptables location is diffrent so I've changed that. Here is the file:

/sbin/modprobe ip_tables
/sbin/modprobe ip_conntrack
/sbin/modprobe ip_conntrack_ftp
/sbin/modprobe ip_conntrack_irc
/sbin/modprobe iptable_nat
echo "1" >/proc/sys/net/ipv4/ip_forward
/sbin/iptables -P INPUT ACCEPT
/sbin/iptables -F INPUT
/sbin/iptables -P OUTPUT ACCEPT
/sbin/iptables -F OUTPUT
/sbin/iptables -P FORWARD ACCEPT
/sbin/iptables -F FORWARD

iptables -A INPUT -i lo -j ACCEPT

iptables -A INPUT -i eth1 -s 192.168.0.0/24 -j ACCEPT
iptables -A FORWARD -i eth1 -s 192.168.0.0/24 -j ACCEPT

iptables -A INPUT -p tcp -j ACCEPT -m state --state ESTABLISHED
iptables -A INPUT -p tcp -j ACCEPT -m state --state RELATED
iptables -A INPUT -p udp -j ACCEPT -m state --state ESTABLISHED
iptables -A INPUT -p icmp -j ACCEPT -m state --state ESTABLISHED
iptables -A INPUT -p icmp -j ACCEPT -m state --state RELATED
iptables -A FORWARD -p tcp -j ACCEPT -m state --state ESTABLISHED
iptables -A FORWARD -p tcp -j ACCEPT -m state --state RELATED
iptables -A FORWARD -p udp -j ACCEPT -m state --state ESTABLISHED
iptables -A FORWARD -p udp -j ACCEPT -m state --state RELATED
iptables -A FORWARD -p icmp -j ACCEPT -m state --state ESTABLISHED
iptables -A FORWARD -p icmp -j ACCEPT -m state --state RELATED


/sbin/iptables -t nat -F
/sbin/iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -j MASQUERADE

Is there anything else besides that I have to do in slackware8.1 2.4.18 to run masq? After rturinning it on I see a message in dmesh that its up and running but my LAN has no connection what so ever. Thank you.

Jakub.

What's the output of
/sbin/ifconfig -a
?
Put a fake public IP if any, so we won't advertise your system.

MAYBE, you need to recompile your kernel to put netfilter (IPtables) NAT support, this is what i had to do or else i just got IPtables errors, after recompiling and including all netfilter options i needed it worked fine.
Also this: http://blacksun.box.sk/tutorials.php?cat=unix helped me a lot, especially setting up conection sharing in slackware, and networking tutorial.
Hope that helps
-NSKL

I recompiled a new kernel and it works now. Thank you for all anserws.

Jakun