[CentOS] Centos Firewall - router with virtual IP

Fri Nov 4 01:54:30 UTC 2011
John R Pierce <pierce at hogranch.com>

On 11/03/11 5:43 PM, Fajar Priyanto wrote:
> Now, I'm adding some virtual interface eth1:0, eth1:1... so on to
> accommodate new subnets created in the LAN.

whats the point of having multiple subnets on the same physical LAN 
segment ?   if you want to isolate separate local networks, you really 
should use separate physical adapters with separate switches... or VLAN 
switching if you have a switch that supports VLAN trunking.

anyways, whatever, yes, you can do it with iptables, but not all off the 
shelf firewall script generators will support multiple LAN subnets.   I 
usually write my own iptables rulesets.

john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast