Foreign File for BNU

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Purpose

Logs contact attempts from unknown systems.

Description

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.

Examples

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.

Files

Item Description
/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.