hi guys .. I'm linux newbie I have LAN that connected to internet. here is the pic : [internet]----------[Linux]----------[LAN] | | | 202.149.83.192-207 202.149.83.194 192.168.0.1-35 with RedHat Linux 2.4.18, how can I make every 4 ip on LAN will be 1 ip on the internet ? (sorry abt my english ) example: 192.168.0.1-4 ---> 202.149.83.195 192.168.0.4/30 --> 202.149.83.196 192.168.0.8/30 --> 202.149.83.197 . . . with my old linux (2.2.16) .. I use : modprobe dummy ifconfig dummy0 202.149.83.195 netmask 255.255.255.240 ifconfig dummy0:1 202.149.83.196 netmask 255.255.255.240 ifconfig dummy0:2 202.149.83.197 netmask 225.255.255.240 . . . ip rule add from 192.168.0.0/30 nat 202.149.83.195 ip rule add from 192.168.0.4/30 nat 202.149.83.196 ip rule add from 192.168.0.8/30 nat 202.149.83.197 . . . but It's NOT WORKING on my new 2.4.18 Linux. what should I do ? Thanks before Yours __________________________________________________ Do You Yahoo!? Yahoo! Sports - sign up for Fantasy Baseball http://sports.yahoo.com