Number of UIDs and GIDs to reserve, starting from <a href="/nixpkgs/option/security.isolate.firstUid"><a href="/nixpkgs/option/firstUid" rel="nofollow">firstUid</a></a> and <a href="/nixpkgs/option/security.isolate.firstGid"><a href="/nixpkgs/option/firstGid" rel="nofollow">firstGid</a></a>.

security.isolate.numBoxes

Number of UIDs and GIDs to reserve, starting from firstUid and firstGid

integer between 1000 and 65533 (both inclusive)