Get error below when trying to ssh to legacy 3560 from my Ubuntu jumphost, running 18.04:
Unable to negotiate with 10.18.3.18 port 22: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1
I don't see the KEX, diffie-hellman-group1-sha1, being offered when viewing the debug:
debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
I have tried to add it to the ssh config but I guess I'm not adding it correctly. Can anyone inform of the proper way to add this to my Ubuntu box?
