On 03/13/2017 07:02 AM, Philip Rhoades wrote:
People, I get an error trying to ssh from a BasicLinux floppy booted 486 (I want to sort out HD problems on the old Adaptec 1542 controlled SCSI drive that has RH5.2 on it!) when trying to connect to my Fedora 25 x86_64 workstation. On the F25 machine in /var/log/secure I get lines like: Mar 13 16:25:47 phil sshd[7562]: Unable to negotiate with 192.168.1.40 port 1034: no matching key exchange method found. Their offer: diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 [preauth]
You are connecting from very old OpenSSH client (3.5), which does not support any of the currently secure cryptography algorithms. You should really consider updating that BasicLinux.
Otherwise you can enable the legacy kex and ciphers in the Fedora OpenSSH server by following these instructions:
http://www.openssh.com/legacy.html Regards, -- Jakub Jelen Software Engineer Security Technologies Red Hat _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
