Support Center > Search Results > SecureKnowledge Details
Telnet command shows "connected" for sites forbidden by Application Control and URL Filtering Technical Level
Symptoms
  • The "telnet command shows "Connected" for sites that are not permitted by by Application Control and URL Filtering.

Cause
The "telnet" command only checks connectivity. It does not use the resource.


Solution

This is an expected behavior.

The "telnet" command does not show if sites are blocked.

Example

This rulebase forbids only some categories, including gambling:

 

When the user runs the "telnet" command to www.gambling.com, the output shows "connected".  



But the page is blocked, and the UserCheck portal is displayed:

 

The URL Filtering engine looks at the HTTP request, and not only at the IP address.

Related Solution:  

sk106655: How to block Telnet access on port 80 or port 443 using Application Control

This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

Give us Feedback
Please rate this document
[1=Worst,5=Best]
Comment