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LISTEN_TIMEOUT

onconfig.std value
10
Units
Seconds
takes effect
When the database server is stopped and restarted
utilities
onmode -wf
onmode-wm
refer to
The Security chapter in the IBM Informix Administrator's Guide

LISTEN_TIMEOUT specifies the number of seconds the server waits for a connection. It can be set to a lower number to guard against faulty connection requests that might indicate a Denial of Service attack. See also information about the MAX_INCOMPLETE_CONNECTIONS configuration parameter on page MAX_INCOMPLETE_CONNECTIONS.

Depending on the machine capability of holding the threads (in number), you can configure MAX_INCOMPLETE_CONNECTIONS to a higher value and depending on the network traffic, you can set LISTEN_TIMEOUT to a lower value to reduce the chance that an attack can reach the maximum limit.

Both the LISTEN_TIMEOUT and the MAX_INCOMPLETE_CONNECTIONS configuration parameters can be changed using the onmode -wf option or superseded for a session with the onmode -wm option. For more information about onmode, see Dynamically Change Certain Connection, PDQ, and Memory Parameters.

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