Xshell connection to ubuntu via ssh solution 1. Xshell client sets www.2cto.com to modify Keep Alive Time 2. Server Side Modify/etc/ssh/sshd_config file, find ClientAliveInterval 0 and ClientAliveCountMax 3, remove the annotator ("#"), change the value of 0 corresponding to ClientAliveInterval to 60, and ClientAliveInterval specifies the time interval between the server and the client to request messages, the default value is 0. clientAliveInterval 60 indicates that the request is sent once every minute and then the client responds to the request, so that the persistent connection is maintained. clientAliveCountMax. Use the default value of 3. clientAliveCountMax indicates that after the server sends a request, the client will be automatically disconnected If no response is received by the client. restart the ssh service tinyletero @ ubun Tu :~ $ Sudo/etc/init. d/ssh stop tinyletero @ ubuntu :~ $ Sudo/etc/init. d/ssh start