Definition: Perimeter defense security
Perimeter defense security is the measures and technologies you employ to keep a clean network boundary. The aim is straightforward: keep attackers out of your network while letting valid traffic through freely. This can include:
- Firewalls for incoming and outgoing traffic filtering.
- VPNs and secure gateways for remote access control.
- Network monitoring tools for edge-based detection of and blocking of malicious traffic.
Why it matters
Even with robust internal security, if you do not secure your network perimeter, it is that much easier for attackers to get a toehold. By having a good perimeter defense in place, you close the door to malware, ransomware, and unauthorized access before it even gets into your network.
In short:
- Perimeter defense guards the borders of your network.
- Perimeter defense security employs firewalls, gateways, and monitoring tools to block out danger.
- It's your frontline of defense, blocking most attacks from ever hitting internal systems.
By learning and keeping perimeter defense up, you’re building a solid foundation for your overall security plan. Consider it building up walls before those attackers sneak in.
