However this approach is not working and it is giving me page not found error. The Host address in WSAD server is also 172.25.182.134 and not localhost. Also I am able to login to the second application from other browser.
Is there any other approach to do this or Am I doing some thing wrong.
There's no reasn you can't call another application on the same server in an IFrame as long as you give the complete URL. There has to be something wrong with the way you're doing it. Post the code if you want help debugging it.