I am having a problem with ftp'ing into a Linux server (RedHat 5.1)
from some DOS computers using FTP software's PCTCP for DOS.
For most of the day many ftp transfers happen with out any problems.
These are recorded correctly in /var/log/messages, /var/log/xferlog,
and a log file from a proprietary daemon. The proprietary daemon has
worked correctly under SCO unix and HP-UX for many years.
In the evening, 7 to 10 PM (of course, when I am not around), the Linux
server stops allowing ftp transfers.
Last night I started a program on a DOS computer that continuously
requested files to be down loaded from the server. This allows me to
know exactly when the problem occurred.
The last successful transfer was at 20:08.
/var/log/messages reports an unknown user timed out at 20:26. The
time-out is 900 seconds, which is 15 minutes. Then it reports two FTP
sessions closed that have no report of being opened. These happen at
20:50 and 20:55.
/var/log/xferlog reports unto the time the system stops responding to
ftp request from the DOS computers (20:08). It shows that next down load
allowed was at 7:25 the next morning. I had not done anything yet, so it
restarted on its own.
The proprietary log reports ftp transfers were attempted, but none were
successful after ftp stopped working. These attempts were at 20:46,
20:52, and 20:54.
There were no attempts between 20:54 and 7:25.
Are there any other logs I can look at, that might give me a clue ?
Is there somewhere that sets a maximum of ftpd daemons running at one
Any suggestions at all ?
Help PLEASE !!!