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Files Reference

Foreign File for BNU


Logs contact attempts from unknown systems.


The /var/spool/uucp/.Admin/Foreign file lists access attempts by unknown systems. The /usr/sbin/uucp/remote.unknown shell script appends an entry to the Foreign file each time a remote computer that is not listed in the local /etc/uucp/Systems file attempts to communicate with that local system.

Someone with root user authority can customize entries in the Foreign file to fit the needs of a specific site by modifying the remote.unknown shell script.


This is a sample entry in the Foreign file:

Wed Sep 20 20:38:22 CDT 1989: call from the system merlin

System merlin, which is not listed in the /etc/uucp/Systems file, attempted to log in September 20 at 20:38 hours (10:38 p.m.). BNU did not allow the unknown system to log in.

Implementation Specifics

This file is part of the Basic Networking Utilities Program (BNU) in BOS Extensions 1.


/var/spool/uucp/.Admin/Foreign Specifies the path of the Foreign file.
/etc/uucp/Permissions Describes access permissions for remote systems.
/etc/uucp/Systems Describes accessible remote systems.
/usr/sbin/uucp/remote.unknown Records contacts from unknown systems in the Foreign file.
/var/spool/uucp/.Admin directory Contains BNU administrative files.

Related Information

The uucp command, uudemon.cleanu command, uux command.

The cron daemon, uucico daemon, uuxqt daemon.

BNU File and Directory Structure and Maintaining BNU in AIX 5L Version 5.1 System Management Guide: Communications and Networks.

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