Further, you may not wish to
allow certain hosts to
query and / or post news, and restrict the newsgroups
that can be accessed.
Finally, you may wish to
restrict the number of users who are
allowed either to access the server in general, or to access a limited
number of newsgroups. With this type of access permission, the
newsreader must support user authentication. Note that NR/2
doesn't support this feature.
While user_access contains
human readable passwords, Changi is also able to use a system
password file etc\passwd containing
encrypted passwords. However, this feature is currently not
available, because Changi is internationally distributed from US
sites.
Debugging permissions
Normally Changi will log rejected client connections using the
syslog daemon.
If Changi is called with option -dP, it will output additional
lines during the determination process.