A DMZ (Demilitarized Zone) network sits between a company's secure perimeter and unsecured external networks, such as the internet. It provides more securable paths for data to flow between the protected network and the internet, making it easier to protect internal resources, provide access, and reduce cyberattack risks. However, DMZs are not perfect security solutions and may not be necessary in modern business environments where resources are often hosted in the cloud or accessed remotely. Modern security solutions based on Zero Trust provide a better fit for today's businesses, offering a more secure and maintainable approach to remote access security. DMZs can introduce security vulnerabilities if not configured and maintained correctly, such as overly-permissive access control rules or unpatched firewalls. They also assume a secure perimeter surrounding on-premises resources, which is less relevant in today's distributed environment. To secure company resources, it is recommended to segment DMZs, lockdown them in dual-firewall architectures, limit what hackers can learn, and monitor and audit the network regularly. Alternatives to DMZ networks include Zero Trust Network Access (ZTNA) solutions, such as Twingate, which provide a modern approach to securing proprietary resources by assuming that every device, network, and user is already compromised.