Solved

Terminal Server access through ISA 2006

Posted on 2010-08-17
5
583 Views
Last Modified: 2013-11-21
Hi Guys,

I configured a terminal server on a Windows 2003 box, all went well and the terminal server is accessible over the LAN.  However, I am trying to configure the ISA firewall to allow connections from the internet, but I keep getting log entry, ACTION:  "denied connection" for the new ISA rule I created for TS.

I created an Access Rule in ISA with source:  "the Internet" and destination:  "IP that of the terminal server".

With RDP port enabled "outbound".  
When I change to "inbound" no log entries appear, and access to the TS still fails.
0
Comment
Question by:Rupert Eghardt
  • 3
  • 2
5 Comments
 
LVL 51

Accepted Solution

by:
Keith Alabaster earned 500 total points
ID: 33461576
Need to publish the RDP service using a non-web-server publishing rule instead of an access rule to cover the RDP traffic that is initiated from the Internet and is inbound.
An access rule for RDP from internal to external will cover RDP traffic that is initiated from the internal network
0
 

Author Comment

by:Rupert Eghardt
ID: 33461948
Thanks keith, could you perhaps just explain why an access rule won't work, and the reason why a non-web-server "PUBLISHING" rule is required?   What is the general consensus regarding the use of "access rule" v/s "non-web-server publishing rule".

0
 
LVL 51

Assisted Solution

by:Keith Alabaster
Keith Alabaster earned 500 total points
ID: 33469061
An access rule is traditionally used for outbound connections i.e. traffic leaving a network that is more secure than the network to which the traffic is destined.
A publishing rule is used to create a 'fronting' connection point for a service that is hosted on a network that is considered by ISA or FTMG as more secure than the requesting device.

I have indicated a non-web-server publishing rule on the assumption that you are using port 3389, the traditional Terminal Services port. Port 3389 is not a proxyable protocol therefore would use a non web-server publishing rule. If you are using TS Gateway over port 443 then you would use a web publishing rule.

If the relationship between two interfaces defined within ISA or FTMG is routed rather than natted then access rules can be used but require to be made in both directions - one for each outbound traffic flow.
0
 

Author Comment

by:Rupert Eghardt
ID: 33472803
Thanks Keith,

I'ts working.  I just had to tick the box for "Requests appear to come from the ISA server computer.

* I believe, if we want to publish TSWEB for the terminal server access, we will have to create a "web-publishing" rule instead?
0
 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 33472823
Correct
0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Short answer to this question: there is no effective WiFi manager in iOS devices as seen in Windows WiFi or Macbook OSx WiFi management, but this article will try and provide some amicable solutions to better suite your needs.
PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
Internet Business Fax to Email Made Easy - With  eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

830 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question