Server Error
The following error occurred:

[code=INVALID_TUNNEL_PORT] Tunneling is not allowed on this port. Contact your system administrator.
Please contact the administrator.


i am getting this error when i am trying to get extensions to my FIREFOX browser,i am using a proxy
i know if i remove my proxy i can download this extensions but i dont want to do this is there no other way out like changing the proxy and and port??

Hope this helps - extracted from here

INVALID_TUNNEL_PORT

Message Text in Browser:
Tunneling is not allowed on this port. Contact your system
administrator.

Explanation:
The administrator has blocked the use of this port from requesting
SECURE requests from clients.

Action:
In the Appliance MANAGER, check both the Outbound Ports option (Setup
tab > Network > General) and the HTTP-Based Tunneling ACL option
(Setup tab > HTTP > Tunneling) to verify that the options are configured
to block only the ports that you want blocked.

Good luck

thanks i will check it outbuddy can u tell me how do i go to the application manager it is not found in my control panel
thanksI didn't mean to infer that you could reset the Appliance Manager from your pc, this is a FUNCTION for your System Administrator.

Good luckHit-man...... Lol........ whose firewall are you trying it tunnel ?
have a read ...it tells you all about it .
http://theproxyconnection.com/firewallsupport.html


dl65 well its my own pc GUYS,thanks dl65