In Through the Front Door – Protecting Your Perimeter  

**Executive Summary:** This blog post by a seasoned penetration tester provides practical guidance to reduce risk from externally exposed services: maintain an up-to-date inventory of open ports and software, perform regular external scanning and timely patching, apply proper network segmentation (DMZs, NAT, VPNs) to limit lateral movement, and ensure audit logging and log retention to support detection and incident response.