Changi NNTP Server 1.0

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Limiting Server Control Access

Changi uses a file named ctrl_access to determine whether the incoming control datagram is authorized or not. Expire will send control datagrams to the server to gain shared or exclusive access to the active and history files. Call Chanco to manually create control datagrams.

By default, Changi tries to read this file from CHANGIWORKDIR, unless otherwise specified by option -c or CHANGICTRLACCESSFILE. If this file can't be located, you can't control the server from a remote machine. Control datagrams are accepted only if sent from the local host.

Granting server control to other hosts than the local one is potentially dangerous and should never be given to unprotected machines. Note that intruders may be able to fake ip addresses and hostnames.

The following example shows, how to grant user-id tomlins any control access, either from the local host or from host hydro.cam.org.

#
# Comments are preceded by '#'
#
hydro.cam.org  tomlins  *
localhost      tomlins  *
For further details, see the description of ctrl_access in the file format section.


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URL: changi/manual/xcessudp.html
Created: 9 October 1996
Revised: 21 November 1996
Author: harald@os2point.ping.de