Question

php linking to files on an internal web server

Asked by: tbeasley123

I've got two php sites running on apache/mysql servers running netware 6.5.  One of the servers is an extranet server that is accessible by customers on the internet.  The other server is an internal server that contains our intranet (which is not externally accessible).  There are some documents on the internal server that I need to link across to the external server.  

I'm looking for a way to do a connection between the two servers where those files can be accessed on the extranet.  Any suggestions on how i can get this to work?

Right now if I go to the external site I can go to the page and the links all have the ip address of the internal server (192.168.0.100) which obviously isn't accessible externally.

Worst case scenario, I'll copy the documents from the intranet to the extranet server and just maintain them in two locations if security will become an issue.

Thanks

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Asked On
2007-08-29 at 14:31:51ID22795782
Tags

linking

,

php

,

files

,

web

Topics

Apache Web Server

,

Web Servers

Participating Experts
3
Points
500
Comments
3

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Answers

 

by: dharmanerdPosted on 2007-08-29 at 15:49:02ID: 19796049

I'd use a sym link. this will require your permissions to be set correctly.

from a command prompt
ln -s external/files internal/files/public_site

now let's assume your document root is internal/files you can access like so...
http://internal_ip_or_domain/public_site

For this to work well, you php from the public site should probably be using absolute references to things like images, css, etc.

now if you say were writing a new php script for the internal site, but wanted to use the database library from the public site, you can do something like this (provide permissions are set correctly)

<?php
//new internal php script
include "/external/files/functions/database.php";

 

by: samriPosted on 2007-08-29 at 15:52:32ID: 19796066

hi tbeasley123,

On the ExtraNet server, you could use apache ProxyPass/ProxyPassReverse to 'mirror' the IntraNet.

So let say you had this setup.

intranet.domain.com - 192.168.0.100
extranet.domain.com - 123.123.123.123

You apache config (Extranet)

<VirtualHost *:80>
# This is for the ExtraNet stuff.
   ServerName www.domain.com
   ServerAlias extranet extranet.domain.com domain.com
#
# rest of config goes here
#

</VirtualHost>
<VirtualHost *:80>
# This is for the Intranet proxy
   ServerName intranet.domain.com
   ServerAlias intranet
   ProxyPass            /      http://192.168.0.100/
   ProxyPassReverse      /      http://192.168.0.100/

</VirtualHost>



If you need to maintain the name intranet in the content (on Extranet server), you would need to publish the intranet.domain.com on the public DNS -- so that it would be 123.123.123.123.  
With this setup, request to http://intranet/docs/something.pdf from internal network, would get to the
IntraNet server. Request from public, would hit the Extranet server, but it would be proxied (silently) to http://192.168.0.100/docs/something.pdf (remember we are not using name in the ProxyPass/ProxyPassReverse line -- because this would create a loop).

I had some detailed writeup on the following PAQ.
http://www.experts-exchange.com/Software/Server_Software/Web_Servers/Q_22519249.html

 

by: ahoffmannPosted on 2007-08-30 at 02:19:23ID: 19798505

either use apache to pass special links to your intranet server (as suggested by samri) which requires 1. apache configuration and 2. proper links in your pages matching the apache configuration
or use your php scripts itself to get the files from the intranet server and deliver the content from ther, which does not require apache configurations. Something like:

<?php
  include "http://intranet/path/to/page.html";
 // your code here ..
?>

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