How to stop kern.log?

If you need stop kern log, you will change parameters in config file of rsyslog. 

rssh and sftp

Problem with rssh.conf

When the user has problem with sftp access, maybe it's problem in /etc/rssh.conf 

tool dig on CentOS7

When we need tool dig, we have to install bind-utlis package. Let's try it!

Disconnecting of putty?

Some people has a problem with putty. They connect to server via putty. When they do nothing, putty automaticly disconnect their. Problem is not a putty but configuration on ssh server.