Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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I am running a Red Hat box as a router using iptables and we recently added 2 IP address for a total of 3. Is there anything I need to do for Linux to recognize these IPs other than porting them through iptables? Is there a way to assign more than a single IP to a network adapter. I assume you must.
Are you sure?
Inetd is for running services like ftp servers that listen on a port. Instead of having the server software loaded all the time using up memeory inetd starts it up only when it is needed.
I think you have to set up mulitiple ip in the lower level network stuff before messing with inetd.
ifconfig eth0:0 xxx.xxx.xxx.xxx is the format for a second IP which will resolve to the same NIC.
ifconfig eth0:1 etc etc
These are not retained through a boot up though. To make them persistant, you need to create a file with the setup.
On Red Hat, cd to /etc/sysconfig/network-scripts. There you will see the configuration file for your network card. It is named ifcfg-eth0 You will need to make a new file named ifcfg-eth0:0 for the second "Virtual IP" address.
Once you have a ifcfg-eth0:x file for any extra IP Addresses that will be bound to that card, you simply restart the network. This will be good thru boots.
I have an iptables script that runs at startup. I was considering adding the appropriate commands there. The reason being that I frequently make changes to the script and this would allow me easy access to the IP configuration also. Does anyone see any problem with that?