In IBM Sterling B2B Integrator version 126.96.36.199_2, we have introduced a feature that will restrict the use of specific Ciphers, MAC(Message Authentication Code algorithm), Key exchange algorithm in client and server side using SFTP protocol.
We have introduced the following properties in security.properties :
Uncomment(remove # in front of property) and add the properties in security.properties.in, run ./setupfiles.sh, ./hardstop.sh, ./run.sh to restart SI for the property changes to take effect.
SSHKeyExchangeAlgList is used internally in SI by SFTP protocol. The property SSHMacAlgList is used to display the algorithms under Preferred MAC in SFTP Server Adapter as shown below :