SSH Tunnel ----> Jumphost -----> Firewall WebUI No Longer Working Properly

Forum|Forum|9 months ago
December 13, 2025
1 reply
282 views

I ssh into a jumphost in order to access my firewall fleet web interfaces.

I am utilizing the "local port forwarding" option in putty in order to acheive this.

I have been using this option for years without issue.

I recently upgraded 2 of my firewalls from 7.4.7 to 7.4.9. After doing so, I am able to log into the web interface of each of the two firewalls, but I am no longer able to use the GUI based CLI. I get the follwoing:

Login refused. (err=-121)

Connection lost. Press Enter to start a new session.

Is anyone also seeing this?

FortiGate

kaman

Staff

Hi hakuntata,

Please try to login from another browser or an Incognito mode tab.

Please clear the browser cookies and then check the behaviour

If this does not take any effect, please try to change the admin-sport i.e. from 4443 to 4444.

Make sure that the port does not have a port conflict (SSL VPN, VIP and other services)

Please refer to the document below for more information:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-fix-CLI-error-message-Connection-lost-Press/ta-p/228472

If you have found a solution, please like and accept it to make it easily accessible to others.

Regards,
Aman

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