Boundary at the 38th parallel, for short

• Troop-free area (Abbr.)
• Neutral Korean area, for short
• Wartime buffer (abbr.)
• Area separating N. and S. Korea
• Border dispute area (abbr.)
• Nonbelligerent mil. area
• Neutral area between N. and S. Korea
• Area where troops are prohibited (Abbr.)
• Part of a certain cease-fire agreement, for short

Wikipedia Word definitions in Wikipedia
In computer security , a DMZ or demilitarized zone (sometimes referred to as a perimeter network ) is a physical or logical subnetwork that contains and exposes an organization's external-facing services to a usually larger and untrusted network, usually ...