Understanding security warnings
Cisco TelePresence ISDN Gateway 2.1 Online help (Printable format) 104 of 135
Audit logs hash
check failed, audit
system integrity
compromised
Check system configuration for
possible security changes
If audit logs checks fail, it is possible that
your ISDN Gateway has been
compromised. For example, someone
may have taken the compact flash card
out and deleted some audit logs.
For more information on the audit log,
refer to Working with the audit logs.
Compact flash
card not present,
audit and CDR
logs will not be
saved
Insert a compact flash card or
check whether the existing
compact flash card is functional
If no compact flash card is installed in the
ISDN Gateway, logs are only stored up to
a maximum of 200 events. The 200
events do not 'wrap', and therefore when
the maximum is reached the log is
deleted and started over again.
The ISDN Gateway will give you this
warning when you are nearing the 200
maximum. To rectify this problem, insert a
compact flash card.
Call encryption is
disabled
Enable call encryption
When encryption status is Disabled, no
calls on the ISDN Gateway will be able to
use encryption.
To enable encryption, go to Settings >
Encryption. For Encryption status, select
Enabled.
Audit log above
75% capacity
Download and delete audit logs.
The audit log has a maximum capacity of
100,000 audit events, or the size limit of
the compact flash card. When you are
nearing either of these limits, the ISDN
Gateway will give you this warning. If you
reach full capacity of the compact flash
card, the ISDN Gateway will 'wrap'
meaning that older logs will be deleted.
To rectify this problem download and
clear the audit log.
To do this, go to Logs > Audit log and
select Download as XML. Once this has
completed, click Delete all records.
Audit log above
90% capacity
Download and delete audit logs.
The audit log has a maximum capacity of
100,000 audit events, or the size limit of
the compact flash card. When you are
nearing either of these limits, the ISDN
Gateway will give you this warning. If you
reach full capacity of the compact flash
card, the ISDN Gateway will 'wrap'
meaning that older logs will be deleted.
To rectify this problem download and
clear the audit log.
To do this, go to Logs > Audit log and
select Download as XML. Once this has
completed, click Delete all records.