On a server with several users I'm looking to reserve port ranges so that only one user has access to a specific port range, IE
user1: 2000-2005 user2: 2006,3003 user3: 1025
In doing so, an application spawned by that user can only access ports allotted to that user. All other ports would fail to bind. Is there a way to do this on a Linux (Ubuntu) server?