For HPUX 10.01, 10.10 and 10.20, the
nettune command is used to configure TCP transport parameters.
Example: The following are equivalent to setting KEEP_IDLE to 5 minutes, KEEPINTVL to 60 seconds, and KEEPCNT to 5 (300/60). These values are examples and may not suit specific environment requirements. Progress does not have specific recommendations - the intervals should be set to as long as an inactive connection is considered to be valid. These changes will affect all TCP connections, not just Progress.
$ nettune -s -w tcp_keepstart 300
$ nettune -s -w tcp_keepfreq 60
$ nettune -s -w tcp_keepstop 300
For HPUX 11.0 and above,
nettune is obsolete functionality in HPUX 11 and instead the
ndd utility can be used for examining and modifying system-wide transport parameters. Refer to Article
How to Configure the keepalive Parameters on HP-UX 11 
