Unable to set rule using service name

[RW]

On Fri, 14 Jul 2017 14:53:47 +0100
RW wrote:

> 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

I didn't put that very well. The name that you can use in place of a
port number is the name of a protocol that uses that port, in this
case "http". The name has to be defined in /etc/services