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Thread: multiple network interfaces and IP addresses

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we have system has 4 ethernet ports

eth0 , eth2 connect comcast connection.

eth0 connect via firewall , has ip of 192.168.0.1 gateway/firewall device 192.168.0.253

eth1 connected directly comcast smc modem ip of 192.168.253.10 gateway 192.168.0.254.

eth1 connected cbeyond directly ip address 192.168.252.1 gateway of 192.168.252.254

if comcast down route traffic on 192.168.0.x network via 192.168.252.1/192.168.252.254 gateway firewall. change on not need automatic since able server via cbeyond.

should have in interfaces, routes , other files ?

how setup os firewall on eth1 , eth2 or should use firewall eth ports ?

when using web browser how can tell eth use ?



cycorp

you /etc/network/interfaces file should this:

code:
auto eth0 iface eth0 inet static      address 192.168.0.1      netmask 255.255.255.0      broadcast 192.168.0.255      network 192.168.0.0      gateway 192.168.0.253      dns-name-servers [your isp dns]  auto eth1 iface eth1 inet static      address 192.168.253.10      netmask 255.255.0.0      broadcast 192.168.255.255      network 192.168.0.0  auto eth2 iface eth2 inet static      address 192.168.252.1      netmask 255.255.255.0      broadcast 192.168.252.255  route add default gw 192.168.0.253 dev eth0
that takes care of static ip setup , web browsing. should set firewall on internet-facing network interfaces


Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Networking & Wireless [ubuntu] multiple network interfaces and IP addresses


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