OpenSSH Heartbeat/Watchdog Patch enhances ssh(1) by adding keepalive functionality to ensure constant connectivity.
The OpenSSH Heartbeat/Watchdog Patch is a valuable software addition that includes a unique feature designed to keep ssh(1) connections alive even when output channels remain silent for extended periods. This patch allows for the null message (SSH_MSG_IGNORE) to be sent as a heartbeat to the server following a defined period of silence, maintaining the connection's integrity. This feature is particularly beneficial for those utilizing IP masquerade/NAT boxes, firewalls, and other similar devices.
In addition to the heartbeat function, the OpenSSH Heartbeat/Watchdog Patch also includes a watchdog timeout function for sshd(8). The watchdog timeout function works in tandem with the heartbeat function to quickly detect any down links that could be an issue, particularly over unreliable connections such as wireless networks.
The latest version of the OpenSSH Heartbeat/Watchdog Patch has been adapted to work with OpenSSH 4.4p1, and the relevant documentation patches have been incorporated. Overall, the patch's features make it a valuable tool for anyone who frequently relies on ssh(1) connections, particularly those who work with potentially unstable networks.
In addition to the heartbeat function, the OpenSSH Heartbeat/Watchdog Patch also includes a watchdog timeout function for sshd(8). The watchdog timeout function works in tandem with the heartbeat function to quickly detect any down links that could be an issue, particularly over unreliable connections such as wireless networks.
The latest version of the OpenSSH Heartbeat/Watchdog Patch has been adapted to work with OpenSSH 4.4p1, and the relevant documentation patches have been incorporated. Overall, the patch's features make it a valuable tool for anyone who frequently relies on ssh(1) connections, particularly those who work with potentially unstable networks.
What's New
Version 4.4p1: N/A