Server security is the hardening of the machine that runs video management, access control or recording software. It covers current patching, unique administrator accounts, disk encryption, restricted network exposure and tested backups, because that server holds both live operations and recorded evidence.
The server holds the footage and the user database, so it is the most valuable target on a security network. It is also frequently the least patched machine in the building.
A baseline hardening checklist
Remove unused services, disable default accounts, keep the operating system and application patched, and restrict management access to known addresses. Full-disk encryption protects the data if the hardware is stolen.
Backups and recovery
Back up configuration and the user database on a schedule, keep a copy offline and test a restore. A backup that has never been restored is an assumption rather than a control.