Algorithm negotiation fail SSH in Jenkins

Question

I\'m trying to ssh from Jenkins to a local server but the following error is thrown:

[SSH] Exception:Algorithm negotiation fail
    com.jcraft.jsch.JSchExcep         


        

Answer 1

In my case - OpenSSH_6.7p1 on server - I had to modify KexAlgorithms and MACs (additional hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96 values):

KexAlgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1

MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-ripemd160-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160,umac-128@openssh.com,hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96

Above should be put placed:

/etc/ssh/sshd_config

And then restart the ssh:

sudo /etc/init.d/ssh restart