chrootuid - 1.3-6.1 main

Chrootuid makes it easy to run a network service at low privilege
level and with restricted file system access. The daemons have access only
to their own directory tree, and run under a low-privileged userid.
.
In the past it has been used to run the gopher and www
(world-wide web) network. It can be used nowadays also for proxy servers.
The arrangement greatly reduces the impact of possible loopholes in
network software.