GRE over IPSec Tunnel Between Cisco and VyOS

The¬†previous tutorial shown GRE tunnel configuration between Cisco router and Linux Core. The big advantage of GRE protocol is that it encapsulates L3 and higher protocols inside the GRE tunnel so routing updates and other multicast traffic can be successfully transferred over the tunnel. The main drawback of GRE protocol is the lack of built-in […]
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CCNA-Security 640-553 - Chapter3 - Part1 - Defending the Perimeter

Part1 – Definitions – General Security guidelines – Physical security – devices placed in locked rooms, steadily mounted to rack, UPS, enough RAM etc. – OS security – using the last stable OS, keeping backup copies of both OS and configuration files in a secure place – Devices hardening – hardening a system –¬† steps […]
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