Web dispatcher for same server but two URL

Dear All,

We are having two different logon screens(url) on same server java system(portal 7.4)

Say 1) – http://testhr:50000/xxx              

2) – http://testhr:50000/yyy

No we are planning to place a web dispatcher in front of this portal system with an URL say

http://logonscreen.domain.com

In this case if a user logs on with http://logonscreen.domain.com and expected to get logon screen of http://testhr:50000/yyy will web dispatcher rout it correctly to the right path kindly advice.

Thanks and Regards,