Articles That Might Interest:

Domain Name System (DNS)

The DNS Protocol - Part 2: DNS Queries & Resoluti…

This section will help you understand how the DNS queries work on the Internet and your home network. There are two ways to use the domain name system in order to resolve a host or domain name to an…

Cisco CallManager-CCME

How To Upgrade Cisco - Linksys SPA8000 Firmware

The Cisco - Linksys SPA8000 is an 8-port IP Telephony Gateway that allows connections for up to eight analog telephones (provides 8 FXS ports) to a VoIP network using the Session Initiation Protocol…

Network Cabling

Straight Thru UTP Cables

This article covers the commonly known Unshielded Twisted Pair (UTP) cable and shows how many pairs the UTP Cat5, Cat5e, Cat6 & Cat7 cables consists of, the colour coding they follow, the differe…

Linux - Unix

Linux CentOS - Redhat EL Installation on HP Smart…

This article was written thanks to our recent encounter of a HP DL120 G7 rack mount server equipped with a HP Smart Array B110i SATA Raid controller, needed to be installed with the Linux CentOS 6.0…

Cisco Switches

Cisco 4507R+E Layer 3 Installation: Redundant WS-…

It's no news that we here at Firewall.cx enjoy writing about our installations of Cisco equipment and especially devices that we don’t get to see and play with every day. Today we cover the installat…

Netflow

Netflow: Monitor Bandwidth & Network Utilization…

Monitoring network traffic & bandwidth usage via Netflow is mandatory for any type and size network. Gaining visibility into user traffic, application traffic and data flows allows network engine…

Web Application Vulnerability Scanners

Free Web Application Vulnerability Report (2019)…

Acunetix has just released their annual Web Application Vulnerability report which aims to provide security professionals, web application developers, system administrators, web server administrators…

Cisco Firewalls

Cisco ASA Firepower Threat Defense (FTD): Downloa…

One Appliance – One Image is what Cisco is targeting for its Next Generation Firewalls. With this vision, Cisco has created a unified software image named “Cisco Firepower Threat Defense”. In t…

Cisco Routers

How and Why You Should Verify IOS Images On Cisco…

Chances are we’ve all needed to upgrade our Cisco’s device IOS software at some point. While upgrading the IOS software on a Cisco device is considered to be a fairly simple process, it can turn out…

Windows Servers

Creating Windows Users and Groups with Windows 20…

In a Windows server environment, it is very important that only authenticated users are allowed to log in for security reasons. To fulfill this requirement the creation of User accounts and Groups is…

Cisco CallManager-CCME

Cisco CallManager Express Basic Concepts - Part 2

Our previous article, Cisco CallManager Express Basic Concepts - Part 1 covered the very basic concepts of CCME and its operation. This article continues with the Cisco CallManager Express basic conc…

Cisco CallManager-CCME

Secure CallManager Express Communications - Encry…

In this article we discuss about the security and encryption of Cisco Unified Communications Manager Express (CUCME) which is an integral part of Cisco UC; and more so of Cisco Express Call processin…