1. Perimeter network segment that is logically between internal and external networks. Its purpose is to enforce the internal network's Information Assurance (IA) policy for external information exchange and to provide external, untrusted sources with restricted access to releasable information while shielding the internal networks from outside attacks. 2. A host or network segment inserted as a "neutral zone" between an organization's private network and the Internet. Source: NIST SP 800-45 Ver 2 3. An interface on a routing firewall that is similar to the interfaces found on the firewall's protected side. Traffic moving between the DMZ and other interfaces on the protected side of the firewall still goes through the firewall and can have firewall protection policies applied. Source: NIST SP 800-41 Rev 1
Understand more election terms clearly
Get one important election term explained each week, with authoritative sources, practical context and related definitions.
1. Perimeter network segment that is logically between internal and external networks. Its purpose is to enforce the internal network's Information Assurance (IA) policy for external information exchange and to provide external, untrusted sources with restricted access to releasable information while shielding the internal networks from outside attacks. 2. A host or network segment inserted as a "neutral zone" between an organization's private network and the Internet. Source: NIST SP 800-45 Ver 2 3. An interface on a routing firewall that is similar to the interfaces found on the firewall's protected side. Traffic moving between the DMZ and other interfaces on the protected side of the firewall still goes through the firewall and can have firewall protection policies applied. Source: NIST SP 800-41 Rev 1
Cite this term
Election Security Glossary. (2026). Demilitarized Zone (dmz). In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/demilitarized-zone-dmz
Sources
01
High consensus
02
Multi-source
Get the weekly election term
Receive one cited, source-backed election explanation in your inbox each week.