Hi, this seems to be this upstream issue: https://github.com/vx/connectbot/issues/141
These things come every now and then, in [1] you see more such being dropped in the past. Until the client is able to use the newer key exchanges you might need to make your server less secure by adding to /etc/ssh/sshd_config: KexAlgorithms +diffie-hellman-group14-sha1 I think from Ubuntu's POV we are good, we are not changing the default to be less secure but users who want to to so can do that in their local confid. Marking as invalid since (for your specific case) it appears as a configuration issue (due to the broken client missing the more modern option). [1]: https://www.openssh.com/legacy.html ** Bug watch added: github.com/vx/connectbot/issues #141 https://github.com/vx/connectbot/issues/141 ** Changed in: openssh (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1877496 Title: focal sshd snubs VX Connectbot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1877496/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
