Sudden application crash in servers Post: 303009785

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Operating Systems HP-UX Sudden application crash in servers Post 303009785 by vbe on Wednesday 20th of December 2017 03:44:40 AM

12-20-2017

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The scanner is not in the server but somewhere on your network, internal I hope, or it may be an attack as mentionned... so in internal it seems there is something looking like a such device at the IP I pointed out - Check!
Years ago I had many HP-UX crashes once a month till I decided to write at the direction saying those "non-intrusive" devices were all but that and crashing HP servers or some mainframe devices, mostly the ones trusted and having/using NFS, the reason is mainly it opens so many connections id doesnt care for itself (MS.. OS?) but on a UNIX server the timeouts are regularly over 5 minutes so a opened port cannot be used till it is cleaned and so in such cases quickly you run out and then no one can connect, not even root and you are doomed... Once I proved where it came from the HP servers were listed out the scanning process... and now they changed system, but I have no more HP either... If you have NFS mounted on that server and the scan manages to make it unreadable then your system depending what is running will try to read desperatly and it s load will go beyond control till the system crashes...

vbe

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LEARN ABOUT FREEBSD

keylogout

KEYLOGOUT(1)						    BSD General Commands Manual 					      KEYLOGOUT(1)

NAME

     keylogout -- delete stored secret key

SYNOPSIS

     keylogout [-f]

DESCRIPTION

     The keylogout utility deletes the key stored by the key server process keyserv(8) to be used by any secure network services, such as NFS.
     Further access to the key is revoked, however current session keys may remain valid till they expire, or are refreshed.  This option will
     cause any background jobs that need secure RPC services to fail, and any scheduled at jobs that need the key to fail.  Also since only one
     copy is kept on a machine of the key, it is a bad idea to place this in your .logout file since it will affect other sessions on the same
     machine.

     The following option is available:

     -f      Forget the rootkey.  This will break secure NFS if it is done on a server.

SEE ALSO

     chkey(1), keylogin(1), login(1), publickey(5), keyserv(8), newkey(8)

BSD
								  April 15, 1989							       BSD