This object sets the number of seconds an idle UDP connection is tracked before its NAT binding is removed, defaulting to 60 seconds with a maximum of one week; a value of zero causes near-immediate timeout. An admin tunes this because UDP has no explicit close, so this timeout is the only way the NAT table reclaims stale UDP bindings such as old VoIP or DNS sessions. For example, an admin might raise this above the 60-second default to keep NAT bindings alive longer for an application that sends UDP keepalives less frequently than once a minute.