by a vulnerability scanning I've get following issue: Problem Description: The Secure Shell 2 (SSH2) protocol is a presentation layer protocol used to provide secure client-server communication. The SSH2 protocol specification requires that a SSH2 server support the diffie-hellman-group1-sha1 key exchange algorithm. This key exchange algorithm is considered strong, but faces a potential weakness in that the same prime number is used for all key exchanges. An alternative key exchange algorithm, diffie-hellman-exchange-group-sha1, provides enhanced security by allowing for the prime number to be specified during key exchange. The target SSH2 server supports the diffie-hellman-group1-sha1 algorithm. Has anybody an idea how can I fix this issue? Thanks for Help! Karl -- View this message in context: http://www.nabble.com/SSH-Key-Exchange-Algorithm-tp15496178p15496178.html Sent from the SSH (Secure Shell) mailing list archive at Nabble.com.