SSH Secure Shell failed to log in: server responded "algorithm negotiation failed"

When SSH Secure Shell Client connects to a remote linux server, the client reports: server responded "algorithm negotiation failed", the solution is as follows:

1. Connect to the linux server through putty, configure and modify the file /etc/ssh/sshd_config in the linux server

Add password authentication PasswordAuthentication yes ; add at the end of the file:

Ciphers aes128-cbc,aes192-cbc,aes256-cbc,aes128-ctr,aes192-ctr,aes256-ctr,3des-cbc,arcfour128,arcfour256,arcfour,blowfish-cbc,cast128-cbc

MACs hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,hmac-sha1-96,hmac-md5-96

KexAlgorithms diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256,ecdh-sha2- nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group1-sha1,[email protected]

        

       2. Restart the sshd service

              

	sudo service ssh restart