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i'm using Redhat 7.2 and the simple rc.firewall ver 0.63 word for word.
I was getting a good connection for a while (about a month) over my AT&T
cable line and just suddenly I wasn't getting any www. traffic from any
of the masqed machines. I get a connection icon, i can ping any
computer in or out, I get msn messenger messages, and I can download and
others can download from my morpheus peer-to-peer program; but to my
dismay I can't get any www, telnet, and ftp traffic. I checked and
rechecked everything (connections, wires, nics, yada yada), I even
backed up my configuration files and reformatted my harddrive. The
masqed machines are windows based by the way and they get there ips from
my linux box. I've been trying to solve this most perplexing problem for
days. Any help will be greatly appreciated. Thank you in advance.
I just read something at
AT&Ts website about them filtering on port 80 for security reasons.
There doing this (they say) because of virus threats and other security
breaches.
A few providers have started doing this, presumably for the same reason.
They say that the only people that will be affected are
people running web servers on there residential network. Do you think
that this might be the culprit. Any enlightenment will be appreciated.
Provided they have it set up correctly, they are absolutely right. They
should only be blocking inbound connection requests destined for port 80
on one of the residential machines. As your requests should not be
coming from port 80, the responses to your browser requests should not
be attempting to connect to you on port 80.
Jamin W. Collins
I think they are filtering port 80 on their gateway. If i'm correct doesn't
they can check the mac address of every packet comming inbound to that port
and possibley filter out those packets that don't match against their mac
address data base. Do you think this may be what is causing me not to receive
any web traffic.
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