Articles That Might Interest:

Windows Servers

Windows Server 2016 Licensing Made Easy – Underst…

This article describes the new Windows Server 2016 Licensing model (per-core licensing) Microsoft has implemented for its new server-based operating system. While the Windows Server 2012 Licensing mo…

Virtualization & VM Backup

How to Enable SNMP on VMware ESXi Host & Configur…

In this article we will show you how to enable SNMP on your VMware ESXi host, configure SNMP Community string and configure your ESXi firewall to allow or block access to the SNMP service from specif…

Linux - Unix

Critical 15 Year-old Linux Security Hole (Ghost)…

Security researchers at qualys.com yesterday released information on a critical 15 year-old Linux security hole which affects millions of Linux systems dated back to the year 2000. The newly pu…

Cisco CallManager-CCME

How to Register Cisco IP Phones & Connect CallMan…

This article shows how to connect Cisco's Unified CallManager with a CallManager Express system (including UC520, UC540 and UC560) via H323 gateway, allowing the two systems to route calls between ea…

VLAN Networks

VLAN Tagging - Understanding VLANs Ethernet Frames

We mentioned that Trunk Links are designed to pass frames (packets) from all VLANs, allowing us to connect multiple switches together and independently configure each port to a specific VLAN. However…

ICMP Protocol

ICMP Protocol - Part 6: Redirect Messages

The ICMP - Redirect Message is always sent from a gateway to the host and the example below will illustrate when this is used. Putting it simply (before we have a look at the example) the ICMP - Red…

Routing

Distance Vector Routing Protocols

Distance Vector routing protocols use frequent broadcasts (255.255.255.255 or FF:FF:FF:FF) of their entire routing table every 30 sec. on all their interfaces in order to communicate with their neigh…

Windows Servers

The Importance of a Comprehensive Backup Strategy…

People and companies usually adopt a backup strategy suited to the needs of their working environment. As such, there is no absolute right or wrong method of backing up data however in order to backu…

VLAN Networks

VLAN InterSwitch Link (ISL) Protocol Analysis

Deciding whether to use ISL or IEEE 802.1q to power your trunk links can be quite confusing if you cannot identify the advantages and disadvantages of each protocol within your network. This article…

Cisco Switches

Password Recovery / Password Reset Procedure for…

This article shows how to reset a password on a Cisco Catalyst 3750-X (stacked or single unit) and Cisco Catalyst 3560-x switch without losing its startup configuration. The Cisco password recovery p…

Windows Servers

Understanding, Creating, Configuring & Applying W…

This article explains what Group Policies are and shows how to configure Windows Server 2012 Active Directory Group Policies. Our next article will cover how to properly enforce Group Policies (Group…

Cisco Data Center (Nexus/UCS)

Nexus 7000/7700 Software Upgrade via ISSU. Comple…

This article shows how to perform an ISSU (In-Service Software Upgrade) on a Nexus Data Center switch (7000 and 7700 models) and avoid service and network disruption. We explain the importance of kee…