Not logging ftp connections in /var/adm/wtmpx file (in last command output)

UNIX for Advanced & Expert Users
1

Hi all,
I have F5 load balancer on my system and checking service status by opening an ftp session in every 30 seconds. These ftp sessions are being logged in /var/adm/wtmpx and filling up the file. when i run the last command most of the output is this ftp session. I was wondering if there is a way not keep log of these ftp sessions on /var/adm/wtmpx file.

Sample:

root@ppstest01 # last | more
testftp   ftp          192.168.200.94   Fri Nov 30 09:57 - 09:57  (00:00)
testftp   ftp          192.168.200.93   Fri Nov 30 09:57 - 09:57  (00:00)
testftp   ftp          192.168.200.94   Fri Nov 30 09:56 - 09:56  (00:00)
testftp   ftp          192.168.200.93   Fri Nov 30 09:56 - 09:56  (00:00)
testftp   ftp          192.168.200.94   Fri Nov 30 09:56 - 09:56  (00:00)
testftp   ftp          192.168.200.93   Fri Nov 30 09:56 - 09:56  (00:00)
testftp   ftp          192.168.200.94   Fri Nov 30 09:55 - 09:55  (00:00)
testftp   ftp          192.168.200.93   Fri Nov 30 09:55 - 09:55  (00:00)
testftp   ftp          192.168.200.94   Fri Nov 30 09:55 - 09:55  (00:00)
testftp   ftp          192.168.200.93   Fri Nov 30 09:55 - 09:55  (00:00)
2

You can use -W option on command line while starting ftpd process to disable ftp login/logout sessions recording into wtmpx file.

Check the ftpd manual here