Firewall, CLI, Firestarter

[lotusalive]

Hi All, Am really loving Jaunty... So far, so good. Have a question about Firewall though. Does Jaunty have a 'built-in' firewall ?

I usually use Firestarter because it has a very nice GUI visual-aid, BUT it seems to be that whenever I have CLI installed, Firestarter crashes almost every other second ! What ways can I beef-up my system to prevent the hits and / or Firestarter crashing so much ?

Whenever I 'Lock' Firestarter, I then cannot get out to anywhere...

I don't really know where to start to become a 'security expert' for my
PC ! I don't really know how to configure Beagle... (Sorry, I thought Beagle used to be a Firewall Program... It must have been GuardDog I was thinking of.) All leads to information appreciated. Thanks.

[whole.grains]

The built-in firewall is called IPTables. Firestarter is just a way to configure and monitor it.

[ibutho]

Hi All, Am really loving Jaunty... So far, so good. Have a question about Firewall though. Does Jaunty have a 'built-in' firewall ?

I usually use Firestarter because it has a very nice GUI visual-aid, BUT it seems to be that whenever I have CLI installed, Firestarter crashes almost every other second ! What ways can I beef-up my system to prevent the hits and / or Firestarter crashing so much ?

Whenever I 'Lock' Firestarter, I then cannot get out to anywhere...

I don't really know where to start to become a 'security expert' for my
PC ! I don't really know how to configure Beagle... All leads to information appreciated. Thanks.

All Linux distros have a built in firewall called iptables/netfilter. Firestarter is just one GUI amongst many for configuring iptables. In Ubuntu you can use ufw (command line) and gufw (the gui) for configuring your firewall.

[lotusalive]

Well that helps ! Thanks whole.grains and ibutho... What if I were to try ARPtables or ebtables ? Can I make a real mess, or can I 'mesh' and 'maze' them ? lol... I'm also going to try 'guarddog' but don't really understand the configuration requirements for firewalls...

[oldos2er]

I don't really know where to start to become a 'security expert' for my
PC

If I were you, I'd start here reading the stickies at the top of the forum: http://ubuntuforums.org/forumdisplay.php?f=338

[lotusalive]

Thanks oldos2er, I will read. The 'Security Discussions' threads are thicker than I can wade through, and seem more for 'admins.'

I'm gonna try to do bodhi.zazen's thread on 'mod evasive' and 'mod ...' and see if that stops the crashing.

[MrWES]

Hi All, Am really loving Jaunty... So far, so good. Have a question about Firewall though. Does Jaunty have a 'built-in' firewall ?

I usually use Firestarter because it has a very nice GUI visual-aid, BUT it seems to be that whenever I have CLI installed, Firestarter crashes almost every other second ! What ways can I beef-up my system to prevent the hits and / or Firestarter crashing so much ?

Whenever I 'Lock' Firestarter, I then cannot get out to anywhere...

I don't really know where to start to become a 'security expert' for my
PC ! I don't really know how to configure Beagle... (Sorry, I thought Beagle used to be a Firewall Program... It must have been GuardDog I was thinking of.) All leads to information appreciated. Thanks.

Install ufw (uncomplicated firewall) and it's GUI, Gufw. You can toggle and configure your firewall easily and quickly.

~Bill

[lotusalive]

Thanks MrWes ! Silly me, I did not understand what ibutho was intending for me ! I'll give it go !

[lotusalive]

Before I got much chance to pursue this strengthening of iptables, ufw, gufw, Firestarter, I had another, my 2nd PC Sys Crash in Jaunty, AGAIN upon a required restart after downloads from Synaptics Pkg Mgr.

This crash, I have no clue WHY it happened, but root suddenly could not be found by grub, and my log-in screen became several purple and green Ubuntu logos across the top of the screen, and 4 one-inch black & white horizontal lines across the bottom half of the screen. The only 'fails' I noticed in the boot log were 'Firestarter' and 'dnsmasq,' the latter of which it claimed was not even installed, yet I had just chosen it as a preference. I was able to access root for awhile through the 8.04 'Rescue System' shell, and I even was able to remove 'Firestarter' that way... I went back to Hardy Heron 8.04 Encrypted x86_64, while attempting to rescue my system, but hard to believe, Firestarter is STILL crashing almost every other second !

Before my crash last night, I was getting ready to try the 6-command instructions for an 'Almost Perfect Firewall,' for Jaunty, from one of the members here.

All suggestions, as always, greatly appreciated.

[sloggerkhan]

Maybe you've made a mess of conflicting firewall software?
If so, it might be easier clean install ontop? So far as semi-easy to configure + advanced at once, I think firehol is decent.

othwerwise, it sounds like you might have had a disk failure of some kind, at least if you get a GRUB error.