Question

How to publish an Apache site through ISA 2006.

Asked by: Go-GBS

I'm trying to publish an Apache website from an internal server for external access.  I already have two other web publishing rules that are publishing IIS sites which work great.  After many attempts, I cannot get access to the Apache site.  I setup the publishing rule to mimick the other publishing rules, but is this correct?  Are there any major differences when creating a Web publishing rule for Apache?

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Asked On
2008-12-23 at 08:31:41ID24006045
Tags

ISA Server 2006

,

Apache

Topics

MS Forefront-ISA

,

Apache Web Server

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Answers

 

by: giltjrPosted on 2008-12-28 at 18:56:36ID: 23253738

How are you "publishing" the other IIS sites?

I am assuming you are NAT'ing a public IP address from the Internet to an internal IP address inside.  All you should need to do is allow any outside address with source port GT 1023 access to the IP  address of the Apache server with the destination port of 80.

 

by: Go-GBSPosted on 2008-12-29 at 05:21:47ID: 23255526

In terms of my publishing rules rules, I'm creating a web listener that points to an external address which I placed on the external NIC of the ISA box, then pointed it towards the internal server.  

When you say any outside source port GT 1023 (I'm assuming GT means greater than), do I need to actually specify that in a rule, and is this specific to Apache?  My biggest thing is, should a publishing rule for an Apache site be the exact same as a publishing ruel for IIS?  

I'll add this, I can see the traffic coming in on port 80 using http, but it's being denied with no rule specified.

 

by: giltjrPosted on 2008-12-29 at 05:34:42ID: 23255582

Most firewalls you setup rules to define which source addresses and source ports you want to allow to connect to which destination addresses and destination ports.

I have never used ISA, my post was more general in nature when setting up a firewall to allow inbound traffic to a Web server.

Unless ISA is doing something really weird for IIS (which I would not put it past MS), there should be no difference between "publishing" an Apache web server and an IIS web server.  Both should be setup to allow inbound port 80, and 443 if you do SSL.

If you have done the same thing, then I would suggest you double check your setup to make sure there are no typos.

 

by: Go-GBSPosted on 2008-12-29 at 05:37:32ID: 23255594

Ok, I don't trust ISA either.  I'll double check the rules, but I'm certain there the same.

 

by: Go-GBSPosted on 2008-12-29 at 09:45:27ID: 23257211

Found the problem, apparently the Apache was using Virtual Hosts, similar to Host Headers in IIS, so I had to allow this within ISA.  There is a checkbox underneath the To tab that pertains to this, since our other IIS sites don't use Host Headers, I assumed they weren't necessary.  Hope this helps anyone out in the future.

 

by: giltjrPosted on 2008-12-29 at 09:58:38ID: 23257307

Glad you found it, but I not sure why a firewall would need to know this.  

Now, a reverse proxy server would, because using Named Virtual Hosts (or Host Headers) requires HTTP 1.1 so that the host name used in the URL must be passed to the web server.   Some reverse proxy servers use HTTP 1.0 to communicate with the back end web servers and HTTP 1.0 does not pass the host name used in the URL so the back end server has no clue which named virtual site to use.

Of course it could be that ISA is really doing reverse proxy severing.

 

by: Go-GBSPosted on 2008-12-29 at 10:03:28ID: 23257341

Well we are using Proxy through ISA, so ISA must not have been passing the headers b/c of the rule.

20120131-EE-VQP-002

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