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.