Maintaining idle connections

Keepalive parameters for the Administration Server and Linux-based connection gateway devices are managed by the operating system.

To configure keepalive parameters:

1. Open the /etc/sysctl.conf file.
2. Add the following parameter values:

   net.ipv4.tcp_keepalive_intvl = 1

   net.ipv4.tcp_keepalive_probes = 10

   net.ipv4.tcp_keepalive_time = 900

   Where:

   • net.ipv4.tcp_keepalive_intvl specifies how often to send keepalive messages after the first one.
   • net.ipv4.tcp_keepalive_probes specifies how many keepalive messages can be sent without a reply before the connection is considered dead.
   • net.ipv4.tcp_keepalive_time specifies how long to wait after the last data packet before sending the first keepalive message.

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