[clug] Are outgoing firewalls of any use?

[Francis Markham]

2009/7/1 Robert Edwards <bob at cs.anu.edu.au>

>
> Clever malware can/will tunnel through whatever ports are open.
> Most likely, that will include tcp port 80 (http), otherwise the web
> disappears. If tcp port 80 is allowed out, then vaguely sophisticated
> malware can get out in any case.
>
>
What about blocking specific applications rather than specific ports?  Is
that viable?

-Francis