ACLs vs. full firewalls

Tue Apr 7 22:46:11 UTC 2009

On 8/04/2009, at 10:32 AM, Karl Auer wrote:

> I'd be interested to hear why people use firewalls. I've never felt  
> the
> need, myself - am I living in a fool's paradise?

End hosts are not always trustworthy.

If a host is compromised, should it be able to send anything and  
everything out to the public network?
If a host is a desktop PC controlled by an end user, should it be able  
to send and receive anything it wants?

IMO, host based filtering and ACLs (either firewalls or router ACLs or  
whatever) in the network should both be used. They fulfil different  
needs.

--
Nathan Ward