[CS-FSLUG] Firewall query

[Ritchie, Josiah S.]

On Linux, you could actually watch every packet with tcpdump. It would
tell you what port and such are moving around and where they are going.
This way you could tell the port.

If you wanted to just watch traffic going out your firewall from you
wife's computer (assuming your win machine is your wife's and it goes
through your computer as a firewall) you could run a line like:
Tcpdump -I eth0 'host 192.168.1.125' to show only packets going in or
out eth0 related to host with IP ending in 125. You could also add 'and
not port 80' to filter out the http traffic.

JSR/

-----Original Message-----
From: Christiansource-bounces at ofb.biz
[mailto:Christiansource-bounces at ofb.biz] On Behalf Of Ed Hurst
Sent: Monday, October 31, 2005 4:47 PM
To: A Christian virtual Free Software and Linux Users Group.
Subject: Re: [CS-FSLUG] Firewall query

On Mon, 31 Oct 2005 11:39:01 -0600, Ritchie, Josiah S.  
<jritchie at bible.edu> wrote:

> The firewall should keep track of the kinds of things it blocks.

It does. However, I'm not sure it declares everything that would be of  
interest to me. Some of my research on this indicates it only shows up  
when one runs a decent software firewall on XP: ZoneAlarm, Sygate,
Kerio,  
etc. There are at *lot* of people griping about this on forums all over.

The browser is completely immaterial. Even if the browser itself blocks

popups, etc., there's no problem. Only when this =something= is blocked
at  
the firewall does it break the webmail interface. Turn off the firewall

and all is well.

My experience teaches me even if I have a commercial account at Yahoo,  
they hold themselves unaccountable. In my situation, I do not have any  
options -- SBC/Yahoo is the only broadband provider in this area under
T1  
prices.

-- 
Ed Hurst
------------
Plain & Simple Computer Help - http://ed.asisaid.com/
Bible Application - http://ed.asisaid.com/bible/index.html
Plain Package blog - http://ed.asisaid.com/blog/

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