Click to See Complete Forum and Search --> : Static Ip's and linksys router


soadfan
03-08-2004, 09:57 PM
I just upgraded my connection, and i now have some static ip's, and i have a few servers i would like to run on them. What I was wondering, is how can i setup my linksys router(BEFSR41), to point static ip's to certain servers? Some of the systems I want to stay behind the router, but i need these servers to have there own static ip's.

Thanks,
Dan

funnyjedi
03-08-2004, 11:49 PM
If I remember right, the router cannot give them static IPs unless they upgraded the firmware. Given that, I resorted to giving the computers in my network very high static IP addresses (like 192.168.1.95) so that they would never be taken by another computer when trying to get a lease.
Hope this helps.

mdwatts
03-09-2004, 01:20 PM
All of my home workstations/servers are assigned static ip address and are behind a Linksys router. I don't remember having to do anything to the Linksys besides configuring my ISP's dns servers and domain name.

My gateway addresses and dns servers in /etc/resolv.conf all point to the Linksys (192.168.1.1).

squeegy
03-09-2004, 01:31 PM
I'm not sure but I think what he's asking is how to assign PUBLIC static ips to his computers using his Linksys router. I am not sure how to do this but it seems like that is the question at hand.

bradfordgd
03-09-2004, 01:46 PM
Not sure if that's possible or not. I have a public static IP assigned to my router and then private static IP's (192.168.x.x) assigned to the systems behind the router. I have the router forward requests to the proper IP behind the router. If I have an http request (port 80) for example, that gets forwarded to one host while a request on another port might get forwarded to a dufferent host.

EnigmaOne
03-09-2004, 01:48 PM
I'm given to agreement with that (squeegy) and, unless there is a major change in the firmware for that model LinkSys (I have an older firmware rev.), you won't be able to use the public static IPs behind the router; as the external IP is assigned to the router WAN interface itself; which is not multi-homed.

It's probably time to dig through the Cisco/LinkSys web site to see if there is any firmware upgrade to help you out, or head for the phone and chat-up the folks at Cisco.

heckle
03-09-2004, 01:55 PM
Unless there has been a new change, you will not be able to do this with the linksys router. What are you going to be using the servers for? Perhaps you can use the port fowarding to do what you need. I do not think that the BEFSR41 will handle packets the same way a 25xx would.

thaddaeus
03-09-2004, 02:07 PM
Just give the IPs to the servers and see what happends. This will set the computers up openly to the internet so make sure each computer has proper security. May i ask what these services your are going to be using the IPs for, this will help in finding alternatives just in case.

retsaw
03-09-2004, 02:33 PM
Originally posted by thaddaeus
Just give the IPs to the servers and see what happends.

I'm 99% sure this wont work as they will then be on the wrong subnet and the router wont know to forward the IP packets to the servers. A better solution would be to set your router up to forward the ports you need to your servers.

soadfan
03-09-2004, 03:38 PM
Sorry, I should have been more clear with my first post, I was refering to public static ip's. I went looking around the linksys site and i couldnt find anything telling me how to do this. Also, I tried to upgrade my firmware yesterday, and i kept getting an error saying it was unable to write to firmware... any ideas?

Thanks,
Dan

EnigmaOne
03-09-2004, 03:43 PM
Enable firmware upgrade in the Linksys configuration and try again.

mdwatts
03-09-2004, 03:46 PM
Originally posted by soadfan
Sorry, I should have been more clear with my first post, I was refering to public static ip's.

I believe you would then need to use something like http://www.myip.org/ or http://www.dyndns.com/

flukshun
03-09-2004, 04:31 PM
forwarding connections based on their destination address to specific servers on your network is not a problem. the problem is that your router can only obtain 1 public ip through it's wan port.

the only solutions i can think of are using a router that can handle multiple public ips, or building one yourself using linux. your linksys router is inadequate.