PKI 102 – Digital Certificates

1. Digital Certificates One of the most important things when it comes to crytpography is authentication which is the process of verifying that an entity really is who it claims to be. In modern cryptography this is usually done through a digital certificate. A digital certificate binds an entity’s identity …

SSH Client 101

1. On the client host 1.1 Connect to a (remote) host To connect to a SSH server use

If no identity file is specified, the client will try to look for one in

. That is for RSA keys. For other key types there are corresponding default locations:

. …

PKI 101 – Key pairs

Public Key Infrastructure, aka PKI, is a set of roles, procedures and policies used to manage digital certificates and public key encryption. …

NetFlow 102 – FNF – Flexible NetFlow

Netflow configuration is different by platform and IOS version. Initially, Cisco IOS supported what is now known as “Traditional/Original Netflow(TNF)”, but newer …

ITIL Service Strategy

1. Principles Goal: Superior performance versus competing alternatives The 4 Ps of Strategy: Perspective: descibes vision and direction, business mission, philosophy Position: …

ITIL Definitions

Outcome: The result of carrying out an activity, following a process or delivering an IT service. Service: A means of delivering value …

DMVPN

1. DMVPN DMVPN – Dynamic Multipoint VPN is a technology that uses IPSec, mGRE and NHRP to provide a dynamic VPN infrastructure. …

How CEF works

1. Process Switching 1.1 How it works Network interface detects a new packet on the wire. The interface will receive the packet …

MPLS L3 VPN

This article assumes the “provider” network already has an IGP in place and that the LDP is configured to advertise label bindings …

IS-IS Mechanics – CLNP

1. ISO OSI Terminology ISO OSI term TCP/IP Equivalent End System Host Intermediate System Router Circuit Interface Area Area Domain Autonomous System …