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I've tested the standard
ac in Ultrix 4.2
(DECstation/DECsystem), SunOS 4.1.1 (Sun3, Sun4, Sparc), Mach 2.5
(Omron/Luna), and DomainOS 10.3 (DN3500). All of these
acs have trouble parsing entries in which the line
ftpxxxx (xxxx being some
number). Whenever these
acs see one of these
entries, they log everyone out at the time of the entry.
HOW IT HAPPENS: if there is a user logged into the machine when an ftp connection occurs, (minimally) you'll get a login record for the user, a login record for the ftp connection, and the logouts for both afterwards (in either order).
TANGIBLE RESULT: the user who was logged in
gets 'logged out' at the time the ftp connection begins, and none
of the time spent during or after the ftp connection. Therefore,
when you run GNU
ac, the totals will most likely be
greater than those of your system's
ac (provided you
specify the other flags that will make GNU
like the system's).
This document was generated on February,
6 2010 using texi2html