Information
SSH uses well known cryptographic algorithms to encrypt all data transmitted between the router and a user. TiMOS/SR-OS Configuration 'preserve-key' ensures that the initial key is maintained after the router is restarted for any reason. 'version 2' ensures that only SSH version 2 connections are accepted. Several attacks against version one have been reported and version 2 is considered more secure.
Solution
Run the following command on the device to enable SSH: configure system security ssh