Microsoft today launched a private beta of its new Vine service, which is designed to allow small groups and organizations to trade vital information. Vine is a downloadable application that allows you to send out Twitter-style alerts, disseminate reports with more complete information, and keep track of your Vine contacts.

That may sound a lot like a social network, but Vine was built solely as a way to organize and disseminate important information among organizations such as sports teams, church groups, and advocacy organizations, or to stay in touch with neighbors, family, and friends during an emergency. Right now, Vine is only available for computers running Windows XP with SP2 or Windows Vista 32- and 64-bit editions.

On Linux environment, it's not a good idea to give access for "root" direct login. The preferred method is login with a username and run "su" (Super User) to get the root access. If given root access directly, by mistake can loose all the data, if accidentally run any specific commands, such as "#rm -rf /*" or any other command which will delete entire file system - So be careful with that.

Before you do this, make sure you have a working user login account and test with "su" command to login to root.

1. Edit /etc/ssh/sshd_config

2. Replace "Protocol 2, 1" to "Protocol 2" and uncomment

3. Replace "PermitRootLogin yes" to "PermitRootLogin no"

Restart SSH

1. /etc/rc.d/init.d/sshd restart

This will prevent a "root" user to login directly through SSH or other way and also we can easily trace the log file to find out who is doing what process.

Enjoy Linux :-)