Link to home
Start Free TrialLog in
Avatar of Jay Thomas
Jay ThomasFlag for United Kingdom of Great Britain and Northern Ireland

asked on

Cannot telnet to a server from the ISA 2006 server

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.
Avatar of Jay Thomas
Jay Thomas
Flag of United Kingdom of Great Britain and Northern Ireland image

ASKER

Anyone know how to write a batch file that i could parse my credentails and use the telnet command perhaps?
Avatar of Suliman Abu Kharroub
Do you have an access rule from localhost to external allowing telnet protocol for all users ?
Hi, no I do not, not from local host. Do you have a rough idea on how to create that?
ASKER CERTIFIED SOLUTION
Avatar of Suliman Abu Kharroub
Suliman Abu Kharroub
Flag of Jordan image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
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?
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?
Which protocol do you select on the rule ? telnet client ?
got it working, many thanks dude.
thank you
You are welcome!