Hi George - > I want to do a reverse proxy of an external site using Apache: > > <VirtualHost prague> > ProxyRequests on
You will want to set "ProxyRequests off" for a reverse proxy, otherwise someone could use you as a forward proxy to get to someplace else. > ProxyPass / http://www.externalsite.com > ProxyPassReverse / http://www.externalsite.com Not sure if it matters, but might need a trailing slash on those, i.e.: ProxyPass / http://www.externalsite.com/ ProxyPassReverse / http://www.externalsite.com/ > ServerName prague > </VirtualHost> > > This works fine AFICT except if there is a page on the remote site > that has a form or other link that uses POST. Have you looked at the URL specified in the form ACTION to see if it is an absolute URL? For example, suppose I point my browser at http://www.george.com/showform.html. Your proxy then sends me the content of http://www.externalsite.com/showform.html. If the form on that page POSTs to "http://www.externalsite.com/cgi-bin/form.cgi"; (instead of "/cgi-bin/form.cgi"), then when I submit I will go directly to www.externalsite.com and bypass your proxy. The same would be true of any URL in the site that is specified absolute rather then relative. > The maybe off-topic question is: Is this documented anywhere? I > haven't been able to find a good explanation why this is. Is there a > workaround? You would need to rewrite any URLs in the page before you send it to the browser, to either turn them into relative URLs, or to point them to www.george.com instead of www.externalsite.com. I'm pretty sure you can't do that with mod_proxy or mod_rewrite alone (although I have seen people do some crazy stuff with mod_rerwite). > I should note that I am using mod_proxy rather than mod_rewrite > because it is my (possibly incorrect) understanding that requests > proxied via mod_rewrite will not end up in my local logs. I have not found that to be the case. Larry Leszczynski [EMAIL PROTECTED]
