ssh connection keep disconected , how to find way? in CentOs vmware

Linux and Unix-Like Red Hat
1

Hello i have CentOS installed on vmware , few days ago every thing was working fine. today every time im connect with putty to the CentOs server after few minutes it disconnect me , how can i find what is the reason ?

2

Does it fail to authenticate?
Does it disconnect after successful authentication?

3

Are you inactive during that time? Did you install any updates? Has the virtualization software been updated?

4

Any suspicious entry in dmesg, /var/log/messages etc. on your centOS VM box?

Thanks, Lo�c

5

hi
when i check /var/log/secure im getting :

Jan 23 18:01:09 localhost sshd[17461]: Exiting on signal 15 when i check the "/var/log/messages" there is nothing that says something about this signal my iptables is closed

also i authenticate and the disconnect happens after successful authentication.

6

signal 15 means "SIGTERM"... Someone has terminated sshd... Strange.