Unable to negotiate with

Unable to negotiate with 55.xxx.455.45 port 30367: no matching cipher found. Their offer: aes256-cbc,[email protected],aes192-cbc,aes128-cbc,arcfour128,arcfour,3des-cbc,none [preauth]

Unable to negotiate with xx.173.152.xxx port 49670: no matching key exchange method found. Their offer: diffie-hellman-group14-sha1,diffie-hellman-group-excha

nge-sha1,diffie-hellman-group1-sha1 [preauth]

See also

• sshd, sshd logs, sshd -t, sshd -T, sshd_config, sftp