Add/Support Key Exchange Algorithm ecdh-sha2-nistp521 and curve25519-sha256
This is supported by WeOnlyDo but not NCM.
https://www.weonlydo.com/SSHServer/Help/wodSSHD-object-properties-KeyExchangeList-property.html
Vote 1 up. SHA1 is old and outdated and should not be used.
We also have a requirement to have key-exchange support for ecdh-sha2-nistp521
Require curve25519-sha256 key exchange for Watchguard Firewalls running newer fireOS and for ruckus switches