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From Luis Moreira <>
Subject Re: [users@httpd] Apache not receiving port 80 traffic - Linux, Netgear
Date Mon, 13 Dec 2004 16:19:08 GMT

    Do you have security rules (access-lists) on your router, or other 
config, were you let through port 8000 ?
    Do you have a similar config to allow port 80 to go through as well ?
Luis wrote:

>I'm at my wits end with this - as I have spent 3 days on reading logs,
>posts - everything I could get my hands on to resolve what 'seems' to be a
>simple problem, but I'm at the point to where I have to post.  I have tried
>multiple solutions that I've read - and so far - no good.  I'll try to be
>brief and would appreciate any help from others.
>ISP - Adelphia - home network connection via cable modem (have called them
>- they don't block anything inbound)
>Netgear WGT642 router - 2 systems connected up behind it - 1 is an XP box -
>the other is a RH9 with Apache 2.0 from the RH RPM updates.
>Long story short - I can access the 'test' page fine from the XP box and
>from the RH9 system just fine - no problems I can see behind the firewall.
>Port forwarding on the netgear is a no brainer - configured properly - and
>for testing - have also set up port 8000 to forward to the RH server.
>Port 80 destined to the RH box - I see the initial handshake using
>tcpdump...but apache never gets the traffic on port 80 from outside the
>firewall.  I'm a newbie at seeing tcpdump traffic...but from reading on the
>web - the 3-part handshake doesn't appear to function - on port 80 only...
>on 8000 it works fine, and inside my local network it works fine...
>So - a synopsis -
>port 80 works fine inside my network - I see the test page
>port 8000 works fine inside and outside my network - I see the test page
>port 80 does not work - from outside my network.
>I've tried MTU size adjustments - 1492, 1436, and the default 1500 - but
>since it works on port 8000 - this probably isn't the problem.
>I've looked at my iptables - whether its 'on' or not doesn't matter - it
>still won't function on port 80 from outside.  When 'on' I do see the ALLOW
>rule to allow port 80 traffic through.
>The official User-To-User support forum of the Apache HTTP Server Project.
>See <URL:> for more info.
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