Unable to set rule using service name

[Kulamani Sethi]

Hi,
I want to set a rule for a particular service URL which running on a remote
server.
I know the IP but don't know the port number where that service is running.
If i set rule for IP then it will applied for entire services running over
there.

There is a option in IPFW rule we can set either port number or name, but
it does not accepting using name. Here is a example for my case.

suppose URL for test1 service  http://x.x.x.x/test1
                 URL for test2 service http://x.x.x.x/test2

I tried a rule, "ipfw add 104 deny log  ip from x.x.x.x test1 to any". Got
error "ipfw: missing "to'' ".
*I want to set rule for test1 where I have no idea about port.*
*Also please help me how to know port number if any way is there.*


*With best Regards,*

Kulamani Sethi,
Bangalore, India
Mob: 9686190111