Re: Comcast problems again

I run on comcast business behind a leaf (linux firewall somewhat like
ipcop) with no problems.  I would recommend a bit of troubleshooting to
find out exactly where the problem is:

1. make sure DNS resolution is working (comcast has had DNS issues
several times in the past).  Try ping google.com and makes sure you get
an address to ping.

2. Trace the IP path along the route email and web use to see where it
is blocked.
tcptraceroute -n google.com 80    (this will trace the web traffic to
google)
traceroute -n <name of your mail provider> 25    (this will trace smtp
to your email provider)

If you are not sure what to make of the output cut and paste it and send
it to me.  I'll explain where the problem is.  Hope this helps,

On Mon, 2011-05-16 at 12:38 -0500, Carey Tyler Schug wrote:
> As of last friday, noon, I lost web and mail access, which goes through 
> an IPCOP firewall.  Pings work, but email and web fails.
> 
> Is there an issue with firewall computers like IPCOP or SMOOTHWALL?  
> Should I set up an IP masquerade?  or will that have the same problems? 
>    I have been worrying about backing up the IPCOP for a while, so I'd 
> probably start all over with a different computer and partition the hard 
> disk so I could back it up easily to a memory stick, and have it be a 
> full time masquerade device, not originating any traffic.

-- 
Trev Peterson
Advanced Reality
Email: [email protected]
Phone: +1 847 406 9018

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