Unable to set rule using service name

[RW]

On Fri, 14 Jul 2017 16:43:56 +0530
Kulamani Sethi wrote:

> 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 

test1 and test2 aren't port numbers, the port number here is 80 for http