2009 R2 Web services Issue

HI all ,

I have a 2009 r2 database in my server and Navision in my local computer . I have give Login Account in the services as my Login credentials for both NAV business Web services and NAV server .

Now the problem is that I can able to connect to service in my LOCAL SYSTEM But unable to connect in the other system in same Domain .

Can any one help me regarding this as i am very new to NAVISION .

THANKS in advance…