I am looking for a program to visually model a computer system that has many socket connections between its component parts.
Its socket connections may be internal to a program, communicate to programs on the same machine, or communicate to programs on remote machine(s).
I would like to be able to visually layout a systems communication map to model this aspect of a system.
I realise something like DIA will probably be my best option, however I was wondering if a more specialised option was available.