Hi, Excuse for this OT question here. But I don't know where I can get an answer. While doing NAT i need to have alias IPs for my router machine like, # ipconfig eth0:1 192.168.0.4
But these rules are lost once the machine is rebooted. How can I make them permanent? I thought of putting these in rc.local but it rather crude approach as my firewall might be started before that. I use Mandrake Linux.
It is OK to have firewall rules loaded before your interfaces are configured. I would go a step further and say that it is recommended. On most Linux distribution I saw that is exactly the order how things are done during boot (first iptables, than network). This way you don't have that one or two seconds gap when your machine/network is unprotected.
As for original question, check how and where your "normal" interfaces are configured. On RedHat it is file ifcfg-IF_NAME (where X is interface number, for example for eth0 file is ifcfg-eth0) in /etc/sysconfig/network-scripts directory (so if you want virtual interface on eth0, you just create ifcfg-eth0:1 file). Solaris does it the same way (/etc/hostname.hme0, /etc/hostname.hme0:1 and so on). On Mandrake it is probably something similar (when you find how the normal interfaces are configured, virtuals are most likely configured the very same way).
-- Aleksandar Milivojevic <amilivojevic@xxxxxx> Pollard Banknote Limited Systems Administrator 1499 Buffalo Place Tel: (204) 474-2323 ext 276 Winnipeg, MB R3T 1L7
