Articles That Might Interest:

Domain Name System (DNS)

The DNS Protocol - Part 3: DNS Query Message Form…

This section will deal with the analysis of the DNS packets by examining how DNS messages are formatted and the options and variables they contain. To fully understand a protocol, you must understand…

Windows Servers

How to Enable & Configure Shadow Copy for Shared…

When you shadow copy a disk volume, you are actually generating a snapshot of the changes made to the folders and files within the disk volume at a certain point in time. Windows 2012 R2 shadow copy…

The OSI Model

The OSI Model: Layer 3 - Network Layer

The Network layer is responsible for routing through an internetwork and for networking addressing. This means that the Network layer is responsible for transporting traffic between devices that are…

Cisco Routers

How To Configure Router On A Stick - 802.1q Trunk…

Router-on-a-stick is a term frequently used to describe a setup up that consists of a router and switch connected using one Ethernet link configured as an 802.1q trunk link. In this setup, the switch…

Cisco Routers

Configuring Cisco Site to Site IPSec VPN with Dyn…

This article serves as an extension to our popular Cisco VPN topics covered here on Firewall.cx. While we’ve covered Site to Site IPSec VPN Tunnel Between Cisco Routers (using static public IP addres…

Cisco Routers

How to Capture Packets on your Cisco Router with…

If you’re tired of setting up SPAN sessions to capture network traffic transiting your network and Cisco router, it’s time to start using Cisco’s Embedded Packet Capture (EPC), available from IOS 12…

Linux - Unix

Linux BIND DNS - Part 4: Common BIND Files - Name…

So far we have covered in great detail the main files required for the firewall.cx domain. These files, which we named db.firewall.cx and db.192.168.0, define all the resouce records and hosts availa…

Routing

OSPF - Part 5: Analysis of OSPF Link State Update…

This article explains how OSPF uses Link State Advertisement (LSA) to exchange information about the network topology between routers. When a router receives an LSA, it is stored in the Link-State Da…

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

Microsoft Windows XP - End of Life / End of Suppo…

A Q&A with Cristian Florian, Product Manager For GFI LanGuard On Security Implications & Planning Ahead With Windows XP End of Life & End of Support just around the corner (8th of April…

ManageEngine

Free IT Operations Management (ITOM) & Artificial…

With digital transformation revolutionizing the IT industry, Artificial Intelligence for IT Operations (AIOps) has become one of the hottest topics in the IT operations management (ITOM) space. At t…

Netflow

Netflow vs SNMP. Two Different Approaches to Netw…

SNMP (Simple Network Management Protocol) and Netflow are both popular protocols with admins, prized for their ability to give visibility over the network and in some cases discern the cause of netwo…

Network Cabling

Important Direct Cable Connection Notes

This page was designed to provide some notes on Direct Cable Connection (File-transfer) of Win9x/ME/2000 with LAPLINK (Printer port) Cable or Null-Modem (serial port) Cable. We've already analysed ex…