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URL forwarding

Posted on 2004-10-05
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Last Modified: 2008-01-09
I have an Apache web server which has a small website on it, http://www.mysite.com. I want to be able to access another machine externally for access to Citrix nFuse. Does anyone know how to (or is there a way to) tell Apache to forward requests to http://www.mysite.com/citrix which is running on another box? The other box is running Windows Server 2003  & IIS 6.

Any help would be greatly appreciated.

Max
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Question by:mxfuk
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by:periwinkle
ID: 12227323
Why not set up a subdomain, called citrix.mysite.com that is the name of the second box?  That would be the easiest solution...
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by:mxfuk
ID: 12227588
Ok, but how would I get to that box, by putting citrix.mysite.com into a web browser would that not go to www.mysite.com? What do I have to tell to get citrix.mysite.com? Many thanks
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by:periwinkle
ID: 12227895
you'd have to set up a separate A record for citrix.mysite.com to go to the second server, whereas www.mysite.com uses a separate A record to go to the first server.  
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by:TomDavidson
ID: 12227899
You would need to set an additional "A" record in the dns zone for mysite.com to point to the IP address of your windows server
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by:mxfuk
ID: 12227957
Ah okay I can do that, my primary DNS is currently hosted offsite, would I have to host DNS myself to get this to work?

Thanks
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by:periwinkle
ID: 12228213
no - you can use DNS servers that are offsite - they just have to point the A record to the IP address of your second server for citrix.mysite.com.
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by:mxfuk
ID: 12228272
Ah, I only have one IP address, is it still possible or will I have to get another IP?
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by:periwinkle
ID: 12228576
If you have a second machine, you must have a second IP address?  Is the second machine accessible from other machines on the internet?
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by:mxfuk
ID: 12229986
Yes but behind a router using NAT so it is a private IP.
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by:periwinkle
ID: 12231238
You would need some way of routing the requests internally - unfortunately, this setup isn't my expertise.  Perhaps someone else will chime in?
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by:TomDavidson
ID: 12232877
You could proxy incoming requests to that domain with apache (so it comes into your main server and subrequests to your windows server) but I'm not totally sure how to configure that. I would look at the documentation for mod_proxy.
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by:mxfuk
ID: 12235230
Okay thank you all for your help. I'll let you know how I get on!
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samri earned 250 total points
ID: 12239799
hi Max,

TomDavidson and periwinkle are on the right track.  Combined both DNS, and proxy stuff would get you a working solution.

Briefly, there is two options that you could opt for:

1. http://citrix.mysite.com/
2. http://www.mysite.com/citrix/

* assume that you have configured DNS to have citrix.mysite.com and www.mysite.com to point to the same IP address (A record or CNAME should work).  And both would be pointing to your public-ip address of the DSL router. Let say this is 200.200.200.200 (apology if somebody may be using this network).

You would need to configure the router to NAT-IN (or forward the traffic) on port 80 (or whatever port you wish to use). To your internal apache box  -- let say this is 192.168.1.1

And the machine running IIS6 is 192.168.1.100

On apache - this depens on which option you take.
Both would need mod_proxy to be loaded: http://httpd.apache.org/docs-2.0/mod/mod_proxy.html
Pay extra attention to ReverseProxy concept : http://httpd.apache.org/docs-2.0/mod/mod_proxy.html#forwardreverse
Examples : http://httpd.apache.org/docs-2.0/mod/mod_proxy.html#examples

Option#1 - you would need to configure apache for VirtualHosting (http://httpd.apache.org/docs-2.0/vhosts/)
-- simple config (more examples http://httpd.apache.org/docs-2.0/vhosts/examples.html)

NameVirtualHost *
<VirtualHost *>
  Servername www.mysite.com
  ...
</VirtualHost>
 
<VirtualHost *>
  ServerName citrix.mysite.com
  ProxyRequests Off

  <Proxy *>
    Order deny,allow
    Allow from all
  </Proxy>
  ProxyPass            /                 http://192.168.1.100/
  ProxyPassReverse /                http://192.168.1.100/
</VirtualHost>

Option #2 : This is to assume that you do not have any Vhost configured.  Just add the proxy directive to the main server config.
--------
  ProxyRequests Off

  <Proxy *>
    Order deny,allow
    Allow from all
  </Proxy>
  ProxyPass            /citrix                 http://192.168.1.100/
  ProxyPassReverse /citrix                http://192.168.1.100/
------

HTH
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Author Comment

by:mxfuk
ID: 12242003
samri,

Thank you so much, you've put me on the right track. Just need to get the mod_proxy module installed and I'm away.

Thanks again

Max
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by:periwinkle
ID: 12242466
Good work, Samri - I'm going to bookmark this one!
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by:samri
ID: 12247091
not a problem all! -- I just elaborated on the earlier comments :)

periwinkle:  you could alway do a search (and even the advance search).  The search feature had improved a lot.
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by:periwinkle
ID: 12247773
samri - yes, I use the search often.  I love the bookmark feature, though, for threads where I want to remember something - this is one of those :)
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