I use the terminal icons for the connection points.
Index: ip_trouble.tcl
===================================================================
RCS file: /sources/cvsrepos/scotty_tkined/scotty-2/tkined/ip_trouble.tcl,v
retrieving revision 1.1.1.1
diff -c -r1.1.1.1 ip_trouble.tcl
*** ip_trouble.tcl      1995/08/24 17:04:58     1.1.1.1
--- ip_trouble.tcl      1995/08/25 13:49:03
***************
*** 244,250 ****
      }
      
      ForeachIpNode id ip host $list {
!       catch {exec $xterm -title $host -e telnet $ip &}
      }
  }
  
--- 244,255 ----
      }
      
      ForeachIpNode id ip host $list {
!       set port [ined attribute $id telnet_port]
!       if { $port=="" } {
!           catch {exec $xterm -title $host -e telnet $ip &}
!       } else {
!           catch {exec $xterm -title $host -e telnet $ip $port &}
!       }
      }
  }