UGIDD(8)

NAME
ugidd - uid/gid mapping daemons

SYNOPSIS
/usr/sbin/rpc.ugidd

DESCRIPTION
ugidd starts a daemon that handles rpc requests to map uid/gids to string names and vice versa. It is called by the nfsd(8) server when the client and server do not share the same passwd file.

This version allows you to restrict access to the server through the hosts_access(5) files when compiled with the -DENABLE_HOSTS_ACCESS option. Otherwise, ugidd could be used by anyone in the Internet to obtain a list of all valid usernames on the client machine. For instance, to restrict access to hosts on your class C IP network, you could add the following lines to hosts.allow and hosts.deny:

# /etc/hosts.allow
rpc.ugidd:     192.168.1.
# /etc/hosts.deny
rpc.ugidd:     ALL

SEE ALSO
exports(5), inetd(8), hosts_access(5)

BUGS
The rpc program number is legal in that it lies in the 0x20000000 to 0x3fffffff ``Defined by user'' range, but is completely arbitrary.