Firewalls are used to block unauthorized access to protected resources while allowing authenticated traffic to traverse through them. Antivirus software helps detect any malicious code or programs that may have been introduced into the system; it also enables users to remove these threats when detected. Data encryption secures sensitive information so that only authorized personnel can access it. Application whitelisting controls what applications can be installed onto a computer by preventing those not explicitly approved from running.

HIPS monitors all incoming connections for signs of suspicious behavior and blocks any attempts at malicious activity should they arise. Finally, secure configurations on all machines ensure that vulnerable settings are not present which could allow attackers to gain entry into the system; additionally they provide an additional layer of defense against known exploits as well as zero-day attacks. All of these countermeasures must be put in place simultaneously in order for an effective layered security strategy to be realized in the workstation domain.