Security perimeters are measures and settings used to protect a computer system or network from unauthorized access, attacks, and other security threats. These parameters are put in place to ensure that only authorized users and devices can access the network, and that sensitive information is kept secure.

Some common security parameters include: Passwords and authentication, Firewall, Encryption, Access controls, Intrusion detection and prevention, Security updates and patches.

Implementing and maintaining effective security parameters is essential for protecting the integrity and confidentiality of sensitive data, and for maintaining the overall security of a computer system or network.