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From "Asad Chaudhary" <>
Subject [users@httpd] Delay on external IP (Apache 2 / Windows 2000 AS)
Date Mon, 13 Oct 2003 01:05:23 GMT
I'm running Apache 2.0.47 on Windows 2000 Advanced Server.  My webserver acts as a router
between the campus network (external subnet and our office LAN (internal subnet  Both subnets are public; the server has globally accessible IPs on both interfaces.
 DNS queries on our domain name return the external IP first, then the internal IP.  This
is what's happening:
1:  From within our internal LAN, all HTTP requests or telnet to port 80 resolve to internal
address first (is this DNS behavior to favor same-subnet addresses?) and everything responds
2:  From outside our internal LAN, the external IP is tried first.  This results in an HTTP
timeout (about 120 seconds) before the internal IP is tried by the client and then Apache
responds immediately.  Nothing in the config file tells Apache to favor one interface ("Listen
80").  Nothing is wrong with DNS, all other services work fine.  (Including webmail, POP3/SMTP,
all to the domain name, no timeouts)
What could be causing this?
I've been testing to find the cause of this delay using telnet to port 80.

Asad Chaudhary
Intern, University Transportation Research Center, CCNY
The City College of New York

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