Troubleshoot TrueNAS (ex FreeNAS)

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External connections fails after upgrading to TrueNAS 13 with no hostkey alg

Some may have experienced ssh to TrueNAS 13 fails after upgrade with error :

$ ssh xxxxx@yyyyy
no hostkey alg

Solution is to add these 2 parameters in Auxilary Options from SSH other options:

PubkeyAcceptedAlgorithms +ssh-rsa
HostKeyAlgorithms +ssh-rsa