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Old 12-13-2003, 06:53 PM   #1
Registered: Oct 2003
Distribution: Slackware 9.1
Posts: 176

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iptables - firewalls - confused newbie

why hello there!

I'm pretty happy with my system at the moment, but I'm hoping to tighten security (I don't believe I have a firewall installed..... fresh Slackware 9.1 installation)

I tried reading a tutorial http://iptables-tutorial.frozentux.n...-tutorial.html

but I get lost... some other place tells me to delete IPCHAINS if I use IPTABLES... I don't know

could someone perhaps guide me? one better, help me configure my firewall.... I downloaded iptables 1.2.9 and am lost.

I'm on cable internet... through eth1... just a home computer... no apache, sendmail, server stuff, etc.. just internet browsing, IM, that kind of stuff.

I'm actively looking around for tutorials atm, but I thought I'd really like some human help, ya know?

found this:

Last edited by mymojo; 12-13-2003 at 07:12 PM.
Old 12-13-2003, 09:39 PM   #2
Registered: Apr 2003
Location: Vancouver, BC
Distribution: Slackware, Ubuntu
Posts: 558

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Thanks for the link to the iptables tutorial thread. Try using it: copy/paste the contents of JordanH's firewall script into /etc/rc.d/rc.firewall.

rc.firewall is created empty by default during the Slackware installation. Execute it by typing /etc/rc.d/rc.firewall from the prompt. Check your firewall by typing iptables -L at the prompt.
Old 12-14-2003, 03:24 AM   #3
Registered: Aug 2003
Location: Dunedin NZ
Distribution: Mint 13 Cinnamon
Posts: 653

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For an excellent GUI for iptables, you can't go past Guarddog available here. It has an excellent tutorial in the help files.

Old 12-14-2003, 04:04 AM   #4
Registered: Oct 2003
Distribution: Slackware 9.1
Posts: 176

Original Poster
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I get this:

bash-2.05b# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

oh, and that GuardDog doesn't work for me - I'm not on KDE - something about not having the Qt library.

Last edited by mymojo; 12-14-2003 at 04:05 AM.
Old 12-14-2003, 03:00 PM   #5
Registered: Dec 2003
Location: Long Island, NY USA
Distribution: RedHat, SUSE
Posts: 336

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This is one of most versatile config scripts I have seen for iptables.
This is one of the better GUIs for configuring iptabes, but is not that versatile.
Old 12-14-2003, 03:52 PM   #6
Senior Member
Registered: Feb 2001
Location: Montreal, Quebec, Canada
Distribution: RedHat, Fedora, CentOS, SUSE
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iptables is better than ipchains, however, it depends on your kernel version.

Kernel 2.4 uses iptables
Kernel 2.2 uses ipchains
Kernel 2.0 uses ipfwadm

To learn more about iptables, take a look at the documentation and HowTOs on netfilter / iptables.

If you want a GUI.

As of now, your iptables accepts everything.
Old 12-14-2003, 04:16 PM   #7
Registered: Oct 2003
Distribution: Slackware 9.1
Posts: 176

Original Poster
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So Slackware 9.1 has no ipchains? sweet!

and right now I'm windows with Zonealarm latest until I sort out iptables

but hey, it's only temporary!
Old 12-16-2003, 04:50 PM   #8
Registered: Dec 2003
Location: USA (Pacific coast)
Distribution: Vector 5.8-SOHO, FreeBSD 6.2
Posts: 513

Rep: Reputation: 34
Originally posted by mymojo
...oh, and that GuardDog doesn't work for me - I'm not on KDE - something about not having the Qt library.
You can install the qt libs without installing KDE, which should work. I only have KDE installed and not gnome, but I made sure to install the gtk libs used by gnome to allow me to use a wider variety of gui apps


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