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Cisco Routers

MPLS Case Study: Why Route Summarization is not R…

MPLS generates Implicit Null label (The Implicit NULL label is the label that has a value of 3) for directly connected interfaces and for the summary routes. Label Switch Router (LSR) generates this…

Palo Alto Networks

Palo Alto Firewalls Security Zones – Tap Zone, Vi…

Palo Alto Networks Next-Generation Firewalls rely on the concept of security zones in order to apply security policies. This means that access lists (firewall rules) are applied to zones and not inte…

Routing

OSPF - Part 6: OSPF LSA Types - Purpose and Funct…

Our previous article explained the purpose of Link State Update (LSU) packets and examined the Link State Advertisement (LSA) information contained within LSU packets. We also saw the most common LSA…

Web Application Vulnerability Scanners

Understanding, Avoiding & Protecting Against Cros…

This article explains what a web browser cookie is and examines how Cross Site Request Forgery work by allowing hackers to intercept and access web browser cookies from unaware users trying to l…

Cisco CallManager-CCME

Configuring CallManager Express (CME) To Support…

Cisco is continuously developing its CallManager Express product, introducing new features and services to help keep up with its customers' and the market’s demands. With the rapid increase of the m…

Windows Servers

Installing Active Directory Services & Domain Con…

This article serves as an Active Directory tutorial covering installation and setup of Windows 2012 Active Directory Services Role & Domain Controller using Windows 2012 PowerShell. Our previous…

Cisco Routers

Cisco VPN Client Configuration - Setup for IOS Ro…

Remote VPN access is an extremely popular service amongst Cisco routers and ASA Firewalls. The flexibility of having remote access to our corporate network and its resources literally from anywhere i…

Palo Alto Networks

How to Fix Palo Alto Firewall “Error: Image File…

Keeping your Palo Alto Firewall up to date with the latest PAN-OS software updates is an important step to ensure your organization is protected against the PAN-OS latest software vulnerabilities, so…

Network Fundamentals

Controlling Broadcasts and Multicasts

The first step in controlling broadcast and multicast traffic is to identify which devices are involved in a broadcast or multicast storm. The following protocols can send broadcast or multicast pack…

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…

Windows Workstations (XP, 7, 8, 10, 11)

How to Enable & Use Windows 8 Startup Settings Bo…

The Windows 8 Start Settings Boot Menu allows users to change the way Windows 8 starts up. This provides users with the ability to enable Safe Mode with or without Command Prompt, Enable Boot Logging…

Windows Workstations (XP, 7, 8, 10, 11)

How to Add and Remove Applications from Windows 8…

In this article, we'll show you how to add (pin) and remove (unpin) any application from the Windows 8 or Windows 8.1 Metro Start Screen. Tiles or the small squares and rectangles appearing on the Wi…