Entity Relationship (ER) diagram to summarise Cisco Unified Communications Manager (CUCM) call routing configuration components, a [...]
Despite Cisco supports both UDS and LDAP directory search, I'd recommend to use LDAP directory search only, due to the caveats ass [...]
The centralised deployment can provide IM and Presence services to multiple remote CUCM voice and video clusters. In a centralised [...]
Introduction
In the last lab EIGRP Routing over DMVPN IPSec Tunnels, I mention that in the production environment, we normally us [...]
Basic IP Telephony concepts and how to access Cisco Unified Communications Manager (CUCM) free environment from Cisco Devnet. [...]
Introduction
This lab lays the foundation of learning CCNA Collaboration. It introduces the basic concepts in the Voice over IP ( [...]
The AWS transit VPC, which adopts a hub-spoke architecture to traverse traffic between other VPCs and on-premises, uses BGP as dyn [...]
Introduction
My previous blogs Use pfSense to Load Balance Web Servers (1) and Use pfSense to Load Balance Web Servers (2) introdu [...]
Introduction
This lab reuses the server infrastructure built in Deploy Scalable and Reliable WordPress Site on LEMP(1), but add a [...]
we will create a new user (user01) on an AWS Linux server (EC2), install the user's public key so that the user can use his/her p [...]
This post demonstrates how to generate a public and private key pair using PuTTYgen on Windows; and how to convert a .pem ( Privac [...]
SSH Public Key Authentication to Access Linux 1 [...]
What is Digital Signage?
Digital Signage uses technologies such as LCD, LED, TV and projector to display digital content such as [...]
Introduction
My previous blogs Use pfSense to Load Balance Web Servers (1) and Use pfSense to Load Balance Web Servers (2) introdu [...]
Introduction
This lab reuses the server infrastructure built in Deploy Scalable and Reliable WordPress Site on LEMP(1), but add a [...]
we will create a new user (user01) on an AWS Linux server (EC2), install the user's public key so that the user can use his/her p [...]
SSH Public Key Authentication to Access Linux 1 [...]
The AWS transit VPC, which adopts a hub-spoke architecture to traverse traffic between other VPCs and on-premises, uses BGP as dyn [...]
Several friends mentioned recently that they wanted to learn Linux and asked whether any books and/or videos I'd recommend. I don' [...]
Introduction
I introduced how to use PowerShell/PowerTool to automate Cisco UCS servers via UCS Manager in July 2016. Time to play [...]
Introduction
PowerShell to Automate UCS (1): Lab Setup introduced the UCSM and PowerTool lab setup.
PowerShell to Automate UCS (2) [...]
we will create a new user (user01) on an AWS Linux server (EC2), install the user's public key so that the user can use his/her p [...]
This post demonstrates how to generate a public and private key pair using PuTTYgen on Windows; and how to convert a .pem ( Privac [...]
SSH Public Key Authentication to Access Linux 1 [...]
