Hello guys, Sorry to bothering you. I had a small network with one ISP and firewall. eth1 -> Is connected to my ISP eth0 + eth0.1 , eth0.2 and etc are my local networks. All my network accesses internet via eth1. My routing table looks like the following : 213.194.242.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 10.123.20.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 10.123.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 10.123.11.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0.8 10.123.42.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0.5 10.123.123.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0.7 10.123.40.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0.4 10.123.30.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 10.123.44.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0.6 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0.8 0.0.0.0 213.194.242.1 0.0.0.0 UG 0 0 0 eth1 Recently I have added secon provider via ADSL. ADSL modem is connected via eth0.8 . Using adsl-setup I have created ppp interface ppp0. Now I want to achieve the following : Computers from local network range 10.123.123.0/24 (eth0.7) should access internet using my second internet provider via ppp0. I believe that for that I need to use advanced networking and iproute package. I will add the second routing table named "adsl" and configure routing via ppp0 there. Together with that i need to set in iptables , nat table to masquerade all ips going out via ppp0. I believe I need to use ip command for this. And the finally my questions are : 1) Is there a good tutorial / howto for using iproute on the internet, except of the LARTC.org 2) Can i utilize by tools of CentOS, to have my configuration (with second routing table, using ip ) somehow stored - to be permanent when I will do machine restart? I mean there are networking-scripts /etc/sysconfing/network-scripts which can handle, IP assigment, virtual LANS, aliases even static routes. Can they handle advanced routing as well? Thank you milion times. David Hlacik