Network Intrusion Detection And Prevention Systems

The 21st century business is hinged on information and communication network infrastructure for efficiency and to ease end-to-end business processes. For this reason and strictly from a fundamental point of view, it is extremely important that measures are taken to mitigate both internal and external threats to the network and devices within.

Firewalls for the Common User

A Firewall is a built in protection system for computers.
The firewall is there as a first line of defence to protect a computer from unwanted intruders.
For the home user the most lightly entry point for unwanted snoopers  to a home system is via the Internet.

Common Port Numbers - An explanation about

Port 20/21: FTP (File Transfer Protocol)

FTP is used for the transfer of files over a computer network. It is one of the most commonly used file transfer protocols within private networks and also the Internet. Port 20 is used for the credentials of the data and port 21 is used to actually transfer the data.

Routing Protocols - Explained and Examples

A routing protocol discovers other routers and advertises the best pathway of communication between routers throughout the network, enabling any two nodes to communicate in a computer network. Protocols such as RIP, OSPF or EIGRP are the responsible for sharing information about their neighbors and the type of topology of the network.

Spanning Tree Protocol Explained

Spanning Tree Protocol (STP) was invented by Dr. Radia Perlman whilst she worked for Digital Equipment Corporation (DEC) based on an algorithm she designed to eliminate loops in computer networks which became her thesis at MIT. Her thesis was “Network Layer Protocols with Byzantine Robustness” submitted to the Massachusetts Institute of Technology (MIT) in August 1988.

Network Topologies Explained

Network Topology is the arrangement of numerous elements of a computer network and maybe depicted physically or logically. Physical topology is the putting together of a number of components of a network, including cable installation and device location and the logical part shows how data moves through a network irrespective of its design.

How to Replicate DNS Zones



The first thing you need to do is to be sure that all your servers have DNS enabled.