... I cant try anything, im doing this at distance using ssh and someone $%·"%%$ stoped the machine, hehe. I will try it tomorrow and I will say you the results.

Thanks

Well, finally wirks fine thanks. Some machines have problems and anothers works. I think the machines it can't connect have a hardware error, i will try to change the ethernet cards. The others works fine with the same parameters.

Thanks and Regards bathory

New problem, the router (linux with 2 eth) cant enroute the eth1 >< eth2. Here is the rc.local archive:

!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local

# Afegit per Tecnics DEIC #
modprobe ipt_MASQUERADE
modprobe iptable_filter

sleep 15
/sbin/ifconfig vmnet1:1 192.168.0.1 netmask 255.255.255.0

# No tocar pecadores xD
/sbin/ifconfig eth1 192.168.128.1 netmask 255.255.255.0 up
/sbin/ifconfig eth2 192.168.129.1 netmask 255.255.255.0 up
echo 1 > /proc/sys/net/ipv4/ip_forward
#/sbin/iptables -t nat -A POSTROUTING -s 192.168.128.0/24 -j MASQUERADE
#/sbin/iptables -t nat -A POSTROUTING -s 192.168.129.0/24 -j MASQUERADE
/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
/sbin/iptables -t nat -A PREROUTING -p tcp -d XXXXXXXXXXXXXX --dport 81 -j DNAT --to 192.168.128.2:80
/sbin/iptables -t nat -A PREROUTING -p tcp -d XXXXXXXXXXXXXX --dport 82 -j DNAT --to 192.168.129.2:80

Since I'm not expert in iptables, I suggest you to take a backup of this file, and then use a script like quicktables to create the iptables rules that fit your network. After that remove the last 3 lines of your script and add a line to run the one created by quicktables (it's name is rc.firewall by default). You can also search freshmeat to find other scripts that do the same job.

btw.. the correct way to enable a NIC on boot is to edit your /etc/network/interfaces file.

Mine looks like this:

auto eth0
iface eth0 inet static
address 192.168.0.102
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255

auto eth1
iface eth1 inet static
address 192.168.254.102
netmask 255.255.0.0
network 192.168.254.0
broadcast 192.168.254.255

Dimis, you're not using red hat, arent you? Because there isnt any /etc/network directory. Debian in my opinion is easier to do this things, but the $%·%%ing red hat...

Thanks for answering.
Regards

Finally! The solution! Here is the rc.local archive:

!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local

# Afegit per Tecnics DEIC #
modprobe ipt_MASQUERADE
modprobe iptable_filter

sleep 15
/sbin/ifconfig vmnet1:1 192.168.0.1 netmask 255.255.255.0

/sbin/ifconfig eth1 192.168.128.1 netmask 255.255.255.0 up
/sbin/ifconfig eth2 192.168.129.1 netmask 255.255.255.0 up
echo 1 > /proc/sys/net/ipv4/ip_forward
#/sbin/iptables -t nat -A POSTROUTING -s 192.168.128.0/24 -j MASQUERADE
#/sbin/iptables -t nat -A POSTROUTING -s 192.168.129.0/24 -j MASQUERADE
/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
/sbin/iptables -t nat -A PREROUTING -p tcp -d XXXXXXXXXX --dport 81 -j DNAT --to 192.168.128.2:80
/sbin/iptables -t nat -A PREROUTING -p rcp -d XXXXXXXXXX --dport 82 -j DNAT --to 192.168.129.2:80
/sbin/iptables -A FORWARD -i eth1 -o eth2 -p ALL -j ACCEPT
/sbin/iptables -A FORWARD -i eth2 -o eth1 -p ALL -j ACCEPT

AND!! in every pc:

route add -net 192.168.129.0 netmask 255.255.255.0 gw 192.168.128.1 dev eth1
or
route add -net 192.168.128.0 netmask 255.255.255.0 gw 192.168.129.1 dev eth1