New Ccna (Routing and Switching 200-125 ) Ccna Security and Ccna Voice Best ever CCNP Route(300-101 and 642-902} and Switch and
also Best RHCE/RHCSA (Linux) notes for RHEL6 and RHEL 7 and
Also Ubuntu and PFSense Firewall PDF Notes
Awesome information in one liner. This is really useful. Specially the chart of Syslog severity information.