On-Net Surveillance Systems, Inc.
NetDVR 6.5
Logging
201
•
Image Server Service Audit Log Files
These files log NetGuard and NetGuard-EVS user activity, if audit logging is enabled in the
. A log file is created for each day with remote user activity.
Image Server
audit log files are by default placed in a subfolder named
ISAuditLog
under the folder
containing the NetDVR software.
Image Server
audit log files are named according to the structure is_auditYYYMMDD.log, e.g.
is_audit20070615.log
.
•
Web Server Log Files
These files log activity on the Web Server, if logging is enabled in the NetDVR HTTP Server window.
Web Server
log files are by default placed in the folder containing the NetDVR software.
Web Server
log files are named according to the structure www_YYYYMMDD.log, e.g.
www_20070615.log
.
•
Image Import Service Log Files
These files log activity regarding the
Image Import
service, which is used for fetching pre-alarm
images, and storing the fetched images in the database. Pre-alarm images is a feature available for
selected cameras only; it enables sending of images from immediately before an event took place
from the camera to the surveillance system via e-mail.
Image Import
Service log files are by default placed in the folder containing the NetDVR software.
Image Import
Service log files are named according to the structure
ImageImportLog_YYYMMDD.log, e.g.
ImageImportLog20070615.log
.
•
Export Log Files
These files log activity regarding database export from the
. A log file is created for each day
on which export was performed.
Export log files are by default, exported databases as well as the export log file are placed in an
Exported Images
folder on the desktop of the computer on which the export was performed. Note,
however, that the export location may be changed as part of the export process.
Export log files are named according to the structure ExportYYYMMDD.log, e.g.
Export20070615.log
.
Note, however, that database exports may be encrypted and/or compressed, in which case export
log files are also encrypted/compressed and further file extensions, such as
.mzi
or
.men
may appear
in export log file names.
•
Log File Structures
Most log files generated by NetDVR use a shared structure complying with the W3C Extended Log File Format:
Each log file consists of a header and a number of log lines:
•
The
header
outlines the information contained in the log lines.
•
The
log lines
consist of two main parts: the log information itself and an encrypted part. The
encrypted part makes it possible—through decryption and comparison—to assert that a log file has
not been tampered with.
