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← Security+ glossary

Enterprise infrastructure

Demilitarized zone / screened subnet (DMZ) DMZ

A special network zone placed between the internal network and the internet that holds publicly accessible servers (e.g. web, email, DNS). If an attacker breaks through a server in the DMZ, they still have to overcome an additional firewall to reach the internal network.

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Related terms

Jump server / bastion host Intrusion detection system / intrusion prevention system (IDS/IPS) Firewall Next-generation firewall (NGFW) Web application firewall (WAF) 802.1X port-based network access control

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