Full Disclosure: Re: Dumb question: Is Windows box behind a router safe ?

[Valdis.Kletnieks () vt edu]

On Tue, 22 Sep 2009 11:29:20 PDT, Steven Anders said:

> I have always thought that having a computer behind the router (since router
> has firewall) is generally safe, but I would love to hear insights or
> thoughts.
In general, that's true.  Most of the current popular infection vectors are
connected with web browsers or e-mail.  It's pretty hard to whack a Windows
box that's just sitting there behind a firewall.  But all bets are off once
you start surfing websites...

And remember - although Firefox has a somewhat better security history
than IE, *NO SOFTWARE IS BUG FREE*.

> 2. If a Windows box is behind a router, could a botnet be installed to it ?
> Assuming, the end user does not install/download any applications from the
> Internet and always use Firefox.
Yes, if the user uses Firefox to hit a site that has malware that will use a
Firefox bug (see above), you can get a botnet on it.  Most firewalls/routers
are configured to automatically pass all outbound traffic, so the botnet
software can easily phone home to get further instructions/updates.

Attachment: _bin
Description:

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/