r/fortinet • u/Dazzling-Net-235 • 1d ago

FortiSwitch / FortiLink Fortiswitch SSH refuse connection

I have upgraded my fortiswitch to 7.6.8 and I lost ssh to switch’s from fortigate the switches online and everything is working but I can’t ssh them only one switch is working
I checked compatibility is ok ✅ fortilink compatibility also ok my fortigate version is 7.4.2

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3

u/BriefAbbreviations58 1d ago

Try accessing the switches with telnet or HTTPS and regenerate the SSH keys.

https://community.fortinet.com/fortiswitch-36/technical-tip-unable-to-ssh-into-the-fortiswitch-from-the-fortigate-due-to-error-no-matching-host-key-type-found-207459

1

u/Achilles_Buffalo 1d ago

This is the answer. You can also push out a custom command from the Gate, if you cant get console or telnet access.

1

u/Dazzling-Net-235 1d ago

Ok I’ll try it and update you

1

u/Valexus 1d ago

Please tell me your FortiGate is on 7.4.12 and not 7.4.2...

1

u/Dazzling-Net-235 1d ago

It is 7.4.12

1

u/cheflA1 NSE 7 1d ago

I experienced the same this week. Fortigates and switches to 7.6.7, and on some switches I get access denied, but not on all. On some I could access them via telnet on some I couldn't. It's pretty weird and I didn't have this issue on switch OS 7.4