Moved server, changed IP, need old IP static route to new IP

Hello, I have a problem!  I just moved a production server from my 192.168.10.x network to another location, on a 192.168.3.x network.  I've changed the IP of the server just fine and can ping it.  My problem is I have a very very old application that has the old server IP coded in and won't be changable for some time.  What I need to do is have my routers know that any traffic headed for should be sent to  

Can anyone help me with this?

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

nprignanoTechnical ArchitectCommented:
what brand and model of router(s) do you have?  if you want help configuring the router, we'll have o know which kins it is first.
alanteigneAuthor Commented:
Ah!  Sorry... long day.  I have a Cisco 3725 and Cisco 2621.

Don JohnstonInstructorCommented:
So you want requests sent to to be sent to

The only way I can think of is to use NAT. But this is going to create a problem if you still have a network anywhere.

Big Business Goals? Which KPIs Will Help You

The most successful MSPs rely on metrics – known as key performance indicators (KPIs) – for making informed decisions that help their businesses thrive, rather than just survive. This eBook provides an overview of the most important KPIs used by top MSPs.

  You can't really use NAT for this as NAT translates the source IP and port but not the destination IP and port. What you want is a proxy server. Have all users use the proxy as their gateway and program the proxy to redirect traffic bound for the old IP to the new.
Don JohnstonInstructorCommented:
>  You can't really use NAT for this as NAT translates the source IP and port but not the destination IP and port.

Not if you do port forwarding.

   That's true but that destination translation would be on the destination router. To redirect traffic to the new subnet he would need to change the destination IP on the source router. That's not covered by PAT.
   This exact same issue just came up today where I work and one of the Cisco security guys suggested running NAT inside-out. He said that would probably work fine for reaching the one, translated destination but it would hose all other traffic. Maybe it's possible if you don't need NAT for any other application in the network, i.e. there is no Internet access.
alanteigneAuthor Commented:
Man, I'm beginning to think there is no way to do it.  Whatever solution I implement must not interfere with any other traffic, and the 192.168.10.x network still must be reachable as if nothing changed.  I guess I'm going to have to look into modifying the ancient app that is causing the trouble.  That won't be any fun, but you've gotta do what you've gotta do!
Don JohnstonInstructorCommented:
Yes. The biggest hurdle with this is trying to retain the network.

alanteigneAuthor Commented:
Yup, and since that's the Corp HQ, I'm sure not going to risk bringing it down!
My only other suggestion would be to install a second NIC in the server and assign it the address. If you have switches that are advanced enough you can create a VLAN that will support the 192.168.10.x network in the new location.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.