2 Gateways or Multiple Gateway on a single CentOS box Rumi, May 21, 2015 Scenerio- eth0- 172.30.0.100 | Gateway- 172.30.0.97 eth1- 192.168.2.247 | Gateway- 192.168.2.1 Need to connect to SIP BOX destination (fictitious)- 202.140.1.1 eth0 has not internet access but it uses the mentioned (172.30.0.97) as gateway to reach 202.140.1.1 server eth0 has internet access by using 192.168.2.1 gateway. Here goes the configuration on /etc/sysconfig/network-scripts/ifcfg-eth0 # Intel Corporation 82540EM Gigabit Ethernet Controller DEVICE=eth0 BOOTPROTO=static BROADCAST=172.30.0.103 DHCPCLASS= HWADDR=08:00:27:E6:A6:62 IPADDR=172.30.0.100 NETMASK=255.255.255.248 NETWORK=172.30.0.96 ONBOOT=yes ip route add 202.40.1.1/32 via 172.30.0.97 Here goes the configuration on /etc/sysconfig/network-scripts/ifcfg-eth1 # Intel Corporation 82540EM Gigabit Ethernet Controller DEVICE=eth1 BOOTPROTO=static BROADCAST=192.168.2.255 HWADDR=08:00:27:86:40:CD IPADDR=192.168.2.247 NETMASK=255.255.255.0 NETWORK=192.168.2.0 ONBOOT=yes Configuration on /etc/sysconfig/network NETWORKING=yes NETWORKING_IPV6=no HOSTNAME=16426 #GATEWAY=172.30.0.97 GATEWAY=192.168.2.1 Configuration on /etc/resolv.conf (Your DNS Server)- #nameserver 8.8.8.8 nameserver 114.130.5.5 nameserver 114.130.5.6 Administrations Configurations (Linux) CentOSiprouteMultiple Gateway