Depending on your hardware and software configuration, you may experience Putty connectivity issues. For example, some types of firewalls may close connections after a certain amount of time has elapsed.

If you experience connectivity issues, you can adjust PuTTY’s configuration to help keep connections alive. To do this, follow these steps:

  1. Start PuTTY.
  2. Load your connection session.
  3. In the Category pane, click Connection.
  4. Under Sending of null packets to keep session active, in the Seconds between keepalives, type 240.

With this configuration, PuTTY sends a packet to the server every 240 seconds (4 minutes) to keep the connection alive.


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