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
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