Integration Server 10.3 | Integration Server Administrator's Guide | Server Configuration Parameters | watt.ssh.
 
watt.ssh.
watt.ssh.jsch.ciphers
Specifies a list of ciphers that JSch supports by default. The default values are aes256-ctr,aes192-ctr,arcfour,arcfour128,arcfour256. To include any other ciphers that Integration Server acting as an SFTP client presents to the SFTP server while establishing a connection, you can append to the default list of ciphers by entering comma-separated list of cipher names.
Important:
If you change the setting of this parameter, you must restart Integration Server for the changes to take effect.
watt.ssh.jsch.logging
Enables JSch logging. When this property is set to true, all the logs from JSch will be printed on Integration Server console. The default is false.
watt.ssh.jsch.mac_c2s
Specifies the order of message authentication code (MAC) algorithms for client to server transmission. The default value is the default order of MAC algorithms that Integration Server acting as an SFTP Client supports.
Note: 
If you change the setting of this parameter, you must restart Integration Server for the changes to take effect.
watt.ssh.jsch.mac_s2c
Specifies the order of message authentication code (MAC) algorithms for server to client transmission. The default value is the default order of MAC algorithms that Integration Server acting as an SFTP Client supports.
Note: 
If you change the setting of this parameter, you must restart Integration Server for the changes to take effect.
Note: 
*All watt.ssh.jsch.* parameters, except watt.ssh.jsch.logging, are deprecated. Do not use the deprecated parameters because the preferred key exchange algorithms, ciphers, and MAC algorithms are configured from the user interface.
*Integration Server uses the watt.ssh.jsch.logging server configuration property to enable logging for both versions of the SFTP client.