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Full Discussion: Track user logoff in AIX 5.3
Operating Systems AIX Track user logoff in AIX 5.3 Post 302257014 by zaxxon on Tuesday 11th of November 2008 06:44:11 AM
Old 11-11-2008
For example you could have nmap running on some Linux box and check if the applications ports are reachable every second and test it's exit code with $? and just write a log for it. Maybe put that Linux PC in the same net like one of the clients having that problem, just to make the network environment the same.
Also you could check if your box has any performance (have a vmstat 1 running and when they call that it happened, check it) problems or shows network errors or something like that. Do the people get disconnected while other people or applications can still communicate with the app?
Maybe you can check the switches/routers that are in between the clients to your server for errors too.
Also the app guys should show their log for the time when this/these disconnect(s) happen. Maybe their app is reporting something.
Maybe it's also the same users every time or some kind of pattern noticeable like that only users from some subnet have this problems or with some sort of workstation?
What kind of application is running there?

Edit: You could also have tcpdump running and search it with ethereal/wireshark.

Last edited by zaxxon; 11-11-2008 at 07:53 AM.. Reason: Added info
 

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rwho(1) 						      General Commands Manual							   rwho(1)

NAME
rwho - show who is logged in on local machines SYNOPSIS
DESCRIPTION
produces output similar to the output of the HP-UX command for all machines on the local network that are running the daemon (see who(1) and rwhod(1M)). If has not received a report from a machine for 11 minutes, assumes the machine is down and does not report users last known to be logged into that machine. output line has fields for the name of the user, the name of the machine, the user's terminal line, the time the user logged in, and the amount of time the user has been idle. Idle time is shown as: If a user has not typed to the system for a minute or more, reports this as idle time. If a user has not typed to the system for an hour or more, the user is omitted from output unless the flag is given. An example output line from would look similar to: This output line could be interpreted as is logged into and his terminal line is has been logged on since September 12 at 13:28 (1:28 p.m.). has not typed anything into for 11 minutes. WARNINGS
output becomes unwieldy when the number of users for each machine on the local network running becomes large. One line of output occurs for each user on each machine on the local network that is running AUTHOR
was developed by the University of California, Berkeley. FILES
Information about other machines. SEE ALSO
ruptime(1), rusers(1), rwhod(1M). rwho(1)
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