CODEWITHSUNDEEP
algorithm
vashista vasi
vashista vasi

Reputation: 51

com.jcraft.jsch.JSchException: Algorithm negotiation fail

I am trying to connect with sftp server from client machine. But com.jcraft.jsch.JSchException: Algorithm negotiation fail this kind of error i am getting.

com.jcraft.jsch.JSchException: Algorithm negotiation fail
    at com.jcraft.jsch.Session.receive_kexinit(Session.java:540)
    at com.jcraft.jsch.Session.connect(Session.java:288)
    at com.jcraft.jsch.Session.connect(Session.java:145)
    at com.na.common.NewReading.main(NewReading.java:28)

i have tried to resolve this by using Algorithm negotiation fail SSH in Jenkins and i have changed the KexAlgorithms in sshd_config, but getting the error.

So please help me. Thank you

Upvotes: 4

Views: 12216

Answers (1)

wierzbiks
wierzbiks

Reputation: 1225

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 [email protected],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 [email protected],[email protected],[email protected],[email protected],hmac-sha2-512,hmac-sha2-256,hmac-ripemd160,[email protected],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

Upvotes: 6

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