Re: accidental firewall

[Florian Kulzer <florian@molphys.leidenuniv.nl>]

hendrik@topoi.pooq.com wrote:
> THis is really stupid. I think I accidentally installed a firewall
> when all I wanted is IP masquerading. How can I find out which
> firewalling package I mught have installed.
>
> Just a list of possible packages that do any kind of firewalling
> would probably be enough. Given those, I could check them out one by
> one and see if I've installed any.

apt-cache search firewall | cut -d " " -f 1 | dpkg -l $(cat) 2>/dev/null | grep ^ii

(watch out if your mail reader wraps lines; all of the above should be
on one line.)

Short explanation: "apt-cache" searches for packages with "firewall" in
their package description, "cut" takes the first column of the output
(which is the package name), "dpkg -l" displays the information on these
packages and "grep" selects the installed ones (their line starts with
"ii").

Regards,
           Florian