Default Severity WARNING
Log Message TCP sequence number <seqno> is not in the acceptable range
<accstart>-<accend>. Dropping
Explanation A TCP segment with an unacceptable sequence number was
received. The packet will be dropped.
Gateway Action drop
Recommended Action None.
Revision 1
Parameters seqno
accstart
accend
Context Parameters Rule Name
Connection
Packet Buffer
2.57.17. tcp_recv_windows_drained (ID: 03300022)
Default Severity CRITICAL
Log Message Out of large TCP receive windows. Maximum windows:
<max_windows>. Triggered <num_events> times last 10 seconds.
Explanation The TCP stack could not accept incomming data since it has run out
of large TCP receive windows. This event was triggered
[num_events] times during the last 10 seconds.
Gateway Action close
Recommended Action If the system is configured to use TCP based ALGs, increase the
amount of maximum sessions parameter on the associated service.
Revision 1
Parameters max_windows
[num_events]
2.57.18. tcp_snd_windows_drained (ID: 03300023)
Default Severity CRITICAL
Log Message Out of large TCP send windows. Maximum windows:
<max_windows>. Triggered <num_events> times last 10 seconds.
Explanation The TCP stack could not send data since it has run out of large TCP
send windows. This event was triggered [num_events] times during
the last 10 seconds.
Gateway Action close
Chapter 2: Log Message Reference
598
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