Solved

Cannot telnet to a server from the ISA 2006 server

Posted on 2013-02-06
10
1,261 Views
Last Modified: 2013-02-07
Hi, i need to confirm that i can telnet to an external
server that sits behind an externla firewall.  We have a simple AD directory on one vlan using ISA 2006 as the proxy/ firewall that sits on our LAN. When from my client pc i run the telnet command to the external server it goes though our ISA server and then times out after hitting the router, we expect this because my client IP address has not been permitted access to teh external firewall however, when i log onto the ISA firewall who's IP address has been allowed through the external firewall it fails to connect using telnet. In fact, it can't even telnet to the router.

How do i enable telnet on the ISA? I'm confused because my client uses telnet and passes the ISA so why can't the ISA itself use telnet? Any help appreciated.
0
Comment
Question by:Jason Thomas
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 4
10 Comments
 
LVL 1

Author Comment

by:Jason Thomas
ID: 38859931
Anyone know how to write a batch file that i could parse my credentails and use the telnet command perhaps?
0
 
LVL 23

Expert Comment

by:Suliman Abu Kharroub
ID: 38861388
Do you have an access rule from localhost to external allowing telnet protocol for all users ?
0
 
LVL 1

Author Comment

by:Jason Thomas
ID: 38861395
Hi, no I do not, not from local host. Do you have a rough idea on how to create that?
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 23

Accepted Solution

by:
Suliman Abu Kharroub earned 500 total points
ID: 38861425
It is as same as creating access policies on ISA server,,, just select "localhost" instead of internal in the from field

http://www.youtube.com/watch?v=WcLCrk-bngc

Select localhost on the from field
0
 
LVL 1

Author Comment

by:Jason Thomas
ID: 38863037
Hi mate,

I puit the rule in but get the same failure. Watched the utube vid to ensure was done corretly. What i'm thinking is that when i run up a command prompt and run teh telnet command is it actually using the ISA software to get out?
0
 
LVL 1

Author Comment

by:Jason Thomas
ID: 38863232
When i check the ISA logs it states "denied connection - reason - unidentified IP traffic (UDP:23). And that it is hitting our last default rule but doesn't make any sense because I have the allow telnet (any port) rule as number 1 in the list from local host to anywhere?
0
 
LVL 23

Expert Comment

by:Suliman Abu Kharroub
ID: 38863325
Which protocol do you select on the rule ? telnet client ?
0
 
LVL 1

Author Comment

by:Jason Thomas
ID: 38863408
got it working, many thanks dude.
0
 
LVL 1

Author Closing Comment

by:Jason Thomas
ID: 38863412
thank you
0
 
LVL 23

Expert Comment

by:Suliman Abu Kharroub
ID: 38863418
You are welcome!
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Suggested Solutions

Forefront is the brand name for Microsoft's major security product. Forefront covers a number of specific security areas and has 'swallowed' a number of applications under this umbrella including Antigen, ISA Server, the Integrated Access Gateway (t…
Microsoft's ISA Server has been its pre-eminent security product for about a decade and is still regarded amongst the well-informed as one of the best software firewalls and application gateways ever released, by any manufacturer. ISA Server has bee…
In an interesting question (https://www.experts-exchange.com/questions/29008360/) here at Experts Exchange, a member asked how to split a single image into multiple images. The primary usage for this is to place many photographs on a flatbed scanner…

751 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