# File firewall/lib/symbiosis/firewall/ports.rb, line 68
        def lookup( name )
          # numeric name is a cheat - we just return that port.
          return name.to_i if ( name =~ /^\d+$/ )

          self.load if self.empty?

          # Lookup the port, if present.  This will default to nil
          self.services[name.downcase]
        end