we use Linux Jumphost for our RDP Connections to our customers. Lately they started to change the key algorithms to ecdsa-sha2-nistp512 only.
Wenn I now try to connect to a RDP Session Host using the Linux JumpHost I receive this.
I have been using PuttY and Windows 10 ssh and I can connect to that Jumphost.
I am on RoyalTS 6.1.50617.
Can anybody tell me if this is a known issue? Has it been fixed in later versions?
for the next major release we plan to include better cipher configuration (similar to what you see in rebex terminal or file transfer). You can see all supported ciphers here:
From what I see, ecdsha-sha2-nistp21 is not available in that list, so you might need to change it to a ecdsa-sha256-nistp521 to make this work.