CIDR Subnet Mask Addresses Wildcard /32 255.255.255.255 1 0.0.0.0 /31 255.255.255.254 2 0.0.0.1 /30 255.255.255.252 4 0.0.0.3 /29 255.255.255.248 8 0.0.0.7 /28 255.255.255.240 16 0.0...
networking
OSI Networking Model
What is the OSI Model? The OSI (Open Systems Interconnection) Reference Model is a conceptual framework that describes the functions of a networking or telecommunication system. The model uses 7 defin...
VyOS Encrypted VXLAN Tunneling
Do you have a need to transport Layer2 VLANs across the internet? This technology is widely used in Data Center Interconnection (DCI) schemes. This walk through will show you how to establish Layer2...
EVE-NG ~ Emulated Virtual Environment Server
What is EVE-NG? EVE-NG is a graphical network emulation server that supports both commercial and open-source router and server images. Key Features KVM HW acceleration Topology designer “click a...
IPv6 ~ Subnetting Reference Guide
Internet Protocol version 6 (IPv6) is the latest version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and ro...
VyOS ~ Initial Installation and Setup
VyOS General Firewall Configuration Compatible Version: 1.2.x set system host-name 'vyos-firewall' set service ssh port '22' set system time-zone 'UTC' set system name-server '1.1.1.1' set system name...
VyOS ~ Settings up a Black Hole Route Server
What is Black Hole Routing? DDoS blackhole routing/filtering (sometimes called blackholing), is a countermeasure to mitigate a DDoS attack in which network traffic is routed into a “black hole,” a...