Solved

Cannot telnet to a server from the ISA 2006 server

Posted on 2013-02-06
10
1,227 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
  • 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
Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

 
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

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Failing SSL report at SSL Labs 5 2,706
Unable to browse a specific website 11 1,629
Firewall Rule 1 275
ISA 2006 Allow specific client access to a HTTPS site 17 407
I have been asked to explain on many, many occasions the correct way to setup network cards and DNS settings on ISA Server 2004, 2006 and forefront Threat management gateway (FTMG) and have willing done so. I have also promised my self everytime tha…
In all versions of ISA Server and the current version of FTMG, the default https protocol uses TCP port 443 and 563 only. This cannot be changed within the ISA or FTMG GUI and must be completed from a Windows cmd prompt on the ISA Server itself. …
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

776 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