Hi,

I have a RH9 install with apache running within vmware on a windows xp host, behind a cable modem and netgear router. I can view the website from an internal ip addr but not from outside the internal LAN.

ethereal trace shows that when a machine from within the internal LAN connects, a tcp http SYN packet is responded to with a SYN, ACK packet. But when a machine from outside the LAN connects, the SYN connect packet is responded to with a RST, ACK packet.

iptables -L shows no rules set.

apache is configured to listen to all addresses on port 80, with no virtual hosts defined.

Your help in solving this would be much appreciated.

Thanks,
Ashv

I know this is obvious but did you configure port forwarding on the router?
if you're using NAT of course.

yes, i did try with port forwarding enabled; same result. Currently the web server m/c is set to exist in the DMZ.

i tried to ping it from a web-based ping service, which doesn't seem to work either.

i have the same problem but this is on my main pc and im running the netgear DG814 router and ive tried port forwarding with no luck.

Try setting up a webserver in XP and see if it works from outside, if it doesn't then it has to do with the router, maybe filtering firewall is enabled and not configured properly?
Or, though unlikely, that your isp blocks port 80 to prevent their users from hosting a web server, try using other uncommon ports as well.

Well, finally figured out the problem. My ISP (Adelphia) is dropping outgoing [SYN, ACK] tcp connection handshake packets that originate from port 80. As far as I can make out, no other ports are blocked; ftp, ssh etc all work and the web server works fine when running on another port (ex: 3245).

I called their help desk but apparently the lower level analysts are not aware that adelphia blocks this way.