firewall?

Jim Cheetham jim at inode.co.nz
Thu Sep 30 09:16:35 UTC 2004


Even XP, eh? Under XP there are services listening to the network that 
you are basically unable to switch off, unless you use a firewall.

With Ubuntu, there are absolutely no services listening on the network. 
There is nothing for a firewall to do, because all attempted 
connections will already fail (yes, for the pedants, there are still 
some (useful?) things that a firewall can do under those 
circumstances).

Of course, there is a firewall present, and you can manipulate it with 
the 'iptables' command - try 'sudo iptables -L' to see that it's 
present. By default there are no rules configured, but it is present. 
Maurice asked about other ways to manipulate the firewall - there are 
some programs available in 'universe', such as 'firehol', that will 
help you construct iptables rules.

-jim

On Sep 30, 2004, at 8:48 PM, Benjamin Edwards wrote:
> I think the is kind of important, even XP now comes with a enabled 
> firewall.
>  
> Ben
>  
> >>> Matt Zimmerman <mdz at canonical.com> 09/29/04 08:58pm >>>
> On Wed, Sep 29, 2004 at 12:54:48PM -0400, Maurice F. Piller wrote:
>  
> > Is there a ubuntu firewall/security application? Are we to manually 
> configure
> > using iptables?
>   
> The system runs no services by default; a friendly firewall system is 
> on the
> list of proposed goals for Hoary.





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