Chris, Thanks for those suggestions. The LAN is only connected to the main network via a satellite link, which is slow and expensive. I am working on an intelligent DNS server that will only process requests when a user is logged on, but this won't be available for a few months yet. In the mean time I've split the main Apache server into two virtual servers - port 80 is used for intranet traffic and port 8080 is the proxy server - hence there is no need for the NoProxy directive. Thanks for your help Dave > -----Original Message----- > From: Kristof Zelechovski [mailto:giecrilj@xxxxxxxxxxxx] > Sent: 29 May 2009 10:43 > To: users@xxxxxxxxxxxxxxxx > Subject: RE: Use of NoProxy without a DNS lookup > > Hi Dave, > Requiring local applications to use raw IP numbers is rather extreme. > You > should have a DNS running on the LAN; local hosts can be referred to by > name, DNS or no DNS, and your proxy would send these request to > nowhere. > IMHO, > Chris > > -----Original Message----- > From: David Vaughan [mailto:david.vaughan@xxxxxxxxxxxx] > Sent: Thursday, May 28, 2009 12:46 PM > To: users@xxxxxxxxxxxxxxxx > Subject: Use of NoProxy without a DNS lookup > > Hi there. > > I have an Apache server (2.2.11 running on Windows XP) which acts as a > forward proxy for a small network connected via a slow IP link to a > main > proxy server. > > The network has an intranet so the NoProxy command is used to prevent > sending these requests to the main proxy. However this causes Apache > to > do a DNS lookup for every request. After re-reading the documentation > I > changed the NoProxy subnet address for a dotted IP address (e.g. > 192.168.0.20), but this still causes a DNS lookup. > > The proxy section of the config file is: > ProxyRemote * http://my.ipaddress.com:8080 > Noproxy 192.168.0.0/16 > > <Proxy *> > Order Deny,Allow > Deny from all > Allow from 192.168 > </Proxy> > > What I'd like is for Apache to only process the NoProxy command if the > host name is in a dotted address format - anything else can be sent to > the main proxy server as this will not be on the local intranet. > > > Any suggestions gratefully received > > Thanks > Dave Vaughan > > > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server > Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx