Comments on: Firewall Ubuntu GUFW

By: Tridgell

Tridgell — Fri, 29 Jan 2010 06:24:12 +0000

Cool! I think it is much better now after you clarified

By: bodhi.zazen

bodhi.zazen — Thu, 28 Jan 2010 22:07:17 +0000

Tridgell: Sorry for the confusion.

On my ufw/gufw blogs I am referring to “default deny” and the big “Deny” button.

These settings set the default policy and as such are not rules in a chain.

They are the same as “sudo iptables -P INPUT DROP”

The default policy basically tells iptables what to do with a packet that does not match any rules.

This is related, but not the same as the order of rules within a chain.

Hope that clarifies things for you, if not, stop ufw and open a terminal. Look at teh output and effect of these commands :

sudo iptables -L -v
sudo iptables -P INPUT DROP
sudo iptables -L -v
sudo iptables -P INPUT ACCEPT
sudo iptables -L -v

By: Tridgell

Tridgell — Thu, 28 Jan 2010 07:42:04 +0000

You say ordering of rules is important and so deny first and then allow. Shouldn’t it be other way round. First allow then deny. So if someone checks rules in the order, allow rules come before deny rules and it does what you expect it to do. Or am I missing anything

By: bodhi.zazen

bodhi.zazen — Wed, 13 Jan 2010 21:27:25 +0000

Thank your for your kind words, glad you are headed in the right direction. I am sure you will be teaching the rest of us in short order.

By: Ronnie aka running_rabbit07

Ronnie aka running_rabbit07 — Wed, 13 Jan 2010 02:00:37 +0000

This is a great tutorial and I have added it to my UF sig. I am currently studying for my AS (I do plan to move to higher levels, but gotta start somewhere.) in Networking Security. Reading your threads on the forums and your blogs is sure to help make me a better network engineer.

Thanks,
Ronnie

By: bodhi.zazen

bodhi.zazen — Thu, 10 Dec 2009 15:49:39 +0000

Glad it helped. I enjoy your blog by the way =)

By: Nigel Babu

Nigel Babu — Thu, 10 Dec 2009 07:22:37 +0000

I was wondering how I configured GUFW after installing it from day 1 of Karmic. Now I got a decent how-to

By: Destillat KW48-2009 | duetsch.info - GNU/Linux, Open Source, Softwareentwicklung, Selbstmanagement, Vim ...

Fri, 27 Nov 2009 09:35:37 +0000

[...] Firewall Ubuntu GUFW [...]

By: bodhi.zazen

bodhi.zazen — Wed, 25 Nov 2009 14:23:38 +0000

GUFW is an acronym for Graphical Uncomplicated FireWall

So the name is not bad, just long

By: Fabian Rodriguez

Fabian Rodriguez — Wed, 25 Nov 2009 13:35:02 +0000

GUFW ?

It’s unfortunate such nice application’s names are impossible to pronounce and difficult to spell in all three languages I speak.

There must be some way to come up with better names!