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#Secure netterm download software
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Progress Software Corporation makes all reasonable efforts to verify this information. The origins of the information on this site may be internal or external to Progress Software Corporation (“Progress”). SSH algorithms supported in WS_FTP Professional Make sure that you are running the most current version of WS_FTP Professional to prevent this issue.
This example of the WS_FTP Log, you can see the server and client agree with the encryption -ctr cipher, but not the MAC and Host key algorithm:Īs SSH servers are increasing their security by supporting the most secure ciphers and algorithms for SSH transfers, Ipswitch is continually updating WS_FTP Professional's ciphers and algorithms to be compatible. This handshake failed because the server and client could not agree on the cipher to use for encryption. Here you can see that the server was able to agree with the diffie-helman-group1 -sha1 algorithm with WS_FTP's hmac -sha1, however, the encryption keys are invalid. In the WS_FTP log, you will see something similar to: If there are no ciphers, or algorithms that they both support, then the handshake will fail and connection will not be allowed. During this handshake, WS_FTP Professional and the server share their public SSH keys to find the most secure common cipher and algorithm for the encryption used during the file transfer. Both the client and the server must support a common cipher and algorithm in order to be able to successfully agree upon what to use. When connecting to an SSH Server, the client and the server agree on the encryption cipher and algorithm that will be used.
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