User/developer discussion for the Linux/KDE firewall Guarddog

Nathan Harris | 2 Feb 2004 15:19

Multiple IPs for Single Interface

I searched the archives, but could not find an answer to this one.  I know
(by experience) that Firestarter does not support this.  I have a single
interface (eth0) with two IPs.  Does Guarddog support this?  I have both
ifcfg-eth0 and ifcfg-eth0:0 in /etc/sysconfig/network-scripts.

--Nathan
nharris <at> eoimaging.com

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Stuart Pettie | 2 Feb 2004 18:30

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Guarddog & Overnet

Hi

Not very experienced with Linux firewalls and looking for some
tips/pointers.

Been playing around with Guarddog & Overnet(replacement for eDonkey 2000
?).

Tried various port settings, but unless I disable the firewall, I am not
getting any joy.

Tried on Mandrake 9.2 & RedHat 9/Fedora 1.

Has anyone got this working ?

Thanks in advance, Stuart

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Diego Chantrain | 4 Feb 2004 11:16

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Guarddog not closing some ports

Hi all,

This is my first post to this list. Please excuse me if this has been
asked before - I did look through the archives :o). 

I am running mandrake linux 9.2 (kernel 2.4.x) and was having immense
trouble with DrakFirewall/shorewall so I decided to switch to Guarddog
(I should point out that I use GNOME 2.4 but guarddog runs just fine all
the same). I was immediately pleased by the flexibility and the power of
the interface and proceeded to shut all (or rather, to stealth) all
incoming connections - something I tested via Shields Up  at
www.grc.com. Now, I casually reran the test after a few days and I find
that three ports appear to be open. I haven't changed the guarddog
settings. What's more, I went back into Guarddog and explicitly shut
those ports down - same result. Strangely enough, this only happens when
I connect to the internet via an ethernet card, not when I do it through
PPP. DHCP is enabled on the eth interface (but then, it already was when
I initially set the firewall up, so that can't really be the problem,
can it?).

What am I doing wrong?

Thank you for your time

Diego

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(Continue reading)

Simon Edwards | 4 Feb 2004 19:18

Re: Guarddog not closing some ports

On Wed, 4 Feb 2004 10:16 am, Diego Chantrain wrote:
> What am I doing wrong?

You didn't tell us what the port were.

--

-- 
Simon Edwards             | Guarddog Firewall
simon <at> simonzone.com       | http://www.simonzone.com/software/
Nijmegen, The Netherlands | "ZooTV? You made the right choice."

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Diego Chantrain | 5 Feb 2004 08:54

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Re: Guarddog not closing some ports

Sorry - I didn't think it'd make a difference. The ports are FTP, Telnet
and Http. I have no FTP or HTTP servers, and a Telnet from another
machine fails, but isn't it odd that an nmap from another machine
reports them as open?

Diego

On Wed, 2004-02-04 at 19:18, Simon Edwards wrote:
> On Wed, 4 Feb 2004 10:16 am, Diego Chantrain wrote:
> > What am I doing wrong?
> 
> You didn't tell us what the port were.

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howard scott | 7 Feb 2004 07:39

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help with guarddog

I have installed guarddog on a Redhat os and I keep getting a message:

   Failed to load image
   Details: file not found

can any one tell me  what this means and what I need to do to fix it.

  Scott

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Bjorn Hansen | 11 Feb 2004 04:04

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Problem with blocked UDP packets


Hi,
I'm developing a game using the GNE Game Network Engine, and am having some 
difficulty with my firewall (configured with guarddog 2.2.0) blocking UDP 
packets I'm trying to send.  Here's the scoop;

I was using port 1234, so had specified a user protocol to open this for TCP, 
and for UDP (might be nice to be able to do both protocols in one 
definition).  Then I enabled this for my lan zone.  TCP packets went through 
fine, but the UDP packets did not.  With the firewall off completely these 
packets arrive as expected.  

So, hypothesizing that guarddog didn't like something in my setup (and having 
tried both bidirectional and not) I decided to try another port, one in the 
built in settings.  The direct play gaming looked good, so I chose port 2302, 
as it was in the desired range.  Unfortunately this yielded the same result,  
my UDP packets were dropped.  

So perhaps GNE is sending UDP on a different port, but I doubt it.  It would 
be nice if the logs showed the port as well (or do I just not see it?).  Does 
anyone have any ideas what could be wrong??

Bjorn

ps. I'm not subscribed to the list, so please make sure replies go to me as 
well :P

Bjorn Hansen | 11 Feb 2004 06:43

Picon

Picon

Re: Problem with blocked UDP packets


Nevermind,  it was GNE. 

On Tuesday 10 February 2004 19:04, you wrote:
> So perhaps GNE is sending UDP on a different port, but I doubt it.  It
> would be nice if the logs showed the port as well (or do I just not see
> it?).  Does anyone have any ideas what could be wrong??

Yazz D. Atlas | 13 Feb 2004 01:19

OpenVPN supported? (aka tun+ network devices)

I have been playing around with Guarddog for a bit and it seems to do 
alot of nice things. However I went looking in the mailing list archives 
for OpenVPN support and didn't seem to find any.

Just would like to make a feature request to add support for tun devices.

I'm currently using Guarddog 2.3.0 (system is Debian/unstable) if that 
makes a difference.

TIA,
	Yazz
--

-- 
  Yazz D. Atlas <yazz <at> osdn.com>
  [ O | S | D | N ]    Open Source Development Network / VA Software
  http://www.osdn.com        47071 Bayside Parkway Fremont, CA 94538
        gpg --keyserver  wwwkeys.pgp.net --recv-key 0x0C57DDA0
        GPG: 644C E9FF D0AF 3C5E 5C73 5E05 00EF C7EC 0C57 DDA0

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Simon Edwards | 16 Feb 2004 21:24

Re: help with guarddog

On Sat, 7 Feb 2004 06:39 am, howard scott wrote:
> I have installed guarddog on a Redhat os and I keep getting a message:
> 
>    Failed to load image
>    Details: file not found
> 
> can any one tell me  what this means and what I need to do to fix it.

Could you first explain where you are seeing this message.

--

-- 
Simon Edwards             | Guarddog Firewall
simon <at> simonzone.com       | http://www.simonzone.com/software/
Nijmegen, The Netherlands | "ZooTV? You made the right choice."

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