It’s not very common but at some point everyone needs to get back into a Linux box they do not know the password to.
The procedure below is for Ubuntu 14.04 with Grub.
Reboot the Linux machine
When you get to the Grub screen select the “Advanced options …more ...
As of 18 Dec 2014 NTPD released V 4.2.8 this addressed multiple vulnerability with all previous versions.
Update all your systems running NTPD (Linux, BSD, Unix based) to V 4.2.8
NTPq -c Version to display your current version of NTPd
Desktop% ntpq -c version …
One of the most effective things that you can do to secure any system is to keep it up to date, ideally this can be done automatically.
Cron-apt is a package that helps you do this.
sh sudo apt-get install cron-apt
cron-apt has two configuration files
One of the background things that you rellly don’t think about untill it is a problem is Time Syncronization.
The standard method to ensure that you have the correct time is Network Time Protocal (NTP).
In linux this is comanaly already installed with your distrubution.
you can verify …more ...
I happened to need a simple tool to enable outgoing email from a Linux server. I discovered SSMTP as extremely simple tool for outgoing email.
to install (on Debian based systems)
Apt-Get install SSMTP
Then configure by editing /etc/ssmtp/ssmtp.conf
EDIT( A couple of recommendations that I found …