MUNGE (MUNGE Uid 'N' Gid Emporium) is an authentication service for creating
and validating credentials. It is designed to be highly scalable for use
in an HPC cluster environment. It allows a process to authenticate the
UID and GID of another local or remote process within a group of hosts
having common users and groups. These hosts form a security realm that is
defined by a shared cryptographic key. Clients within this security realm
can create and validate credentials without the use of root privileges,
reserved ports, or platform-specific methods.