System Integrity
Another common feature in security conscious systems is integrity checking.
This is usually done by following these steps:
- Acquire a baseline for the system
- This can be done by calculating a checksum for every file you wish
to monitor
- Place baseline image on read only media
- This database should NOT be stored online
- Place it on a floppy or burn it onto a cdrom.
- Periodically compare image with current system
- Compare the current checksums with the baseline set and note any
differences. Any changes unless known, should set off alarm bells.
