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8 Different Types of Servers in Computer Networks

If you’re reading this article right now, you’ve already utilized the client-server model without even realizing it. You (as the client) have requested a resource (i.e this webpage) which was served to you by a webserver. This is the prevailing architecture for modern communications whereby digital data is offered by servers to clients. The alternate […]

Filed Under: General Networking

10 Different Types of IP Addresses Used in Computer Networks

An Internet Protocol (IP) Address is a term that you will hear a lot if you are into any field of Information Technology. Especially people in TCP/IP networking have to deal with IP addresses in their every-day professional life. Just like any house or building in the world has a unique postal mail address in […]

Filed Under: General Networking

Difference Between Routers and Switches in TCP/IP Networks

The key difference between routers and switches in TCP/IP networks is that Switches primarily function to provide Layer 2 connectivity and Routers provide Layer 3 connectivity (as described in the OSI layer model). What exactly does this mean? From a high level view it means that switches allow hosts to communicate as long as they […]

Filed Under: General Networking

10 Best Computer Networking Jobs with High Salaries in USA

In these days of uncertainty around employment, IT remains a solid option for those who either have the qualifications or those who are seriously thinking about a career change. In this article I’ll discuss the best-paying jobs, both in the core networking field and in network security as well. There are many roles and job […]

Filed Under: General Networking

Collision Domains and Broadcast Domains Explained (with Diagrams and Examples)

In this blog I usually share practical configuration examples and how-to guides about Cisco networking devices and technologies (routers, switches, ASA firewalls etc). However, there are a lot of people out there interested in more generic and fundamental networking topics because they either just starting out in this field or are learning the basic concepts […]

Filed Under: General Networking

10 Best Network Troubleshooting Software Tools (Free&Paid)

As a network engineer, you will be spending almost half of your time in troubleshooting issues arising in the network or solving problems related to IT and network conditions. Although there are several Windows or Linux commands that you can use on host computers to check for various connectivity issues, a professional should have a […]

Filed Under: General Networking, Software

DNS Port Number – What is Domain Name System – How DNS Works

DNS (Domain Name System) is the system that translates an Internet or Host name (that is easier for people to remember) to an IP address. In this article we’ll describe how DNS works, what port numbers are used for DNS protocol etc so keep reading for all info below. What is DNS A Domain Name […]

Filed Under: General Networking

How to Configure Static Routing on Cisco IOS Routers (Examples)

Cisco IOS Routers support both static and dynamic routes. In small networks (2 to 5 routers) I would suggest to configure only static routes, especially if the network is not going to change much over time. Of course dynamic routing (using dynamic routing protocols such as RIP, OSPF, EIGRP) is much more flexible and scalable […]

Filed Under: Cisco Routers, General Networking

What is a Subnet Mask Used For (on Routers and Hosts)

This is a post for people new to networking that have just started learning IP addressing and the basis of routing and subnetting. Every host or device on a TCP/IP network MUST have an IP address assigned in order to communicate with other devices. An IP address consists of a network part and a host […]

Filed Under: General Networking

10 Best Computer Networking Books for Beginners & Experts

I have read tens of books (both in ebook format and also hard copy textbooks) in my networking professional career over the last 18 years. In fact, all of my preparation for my Cisco and other IT certifications was based on book studying (in addition to hands-on practice of course). Personally, I believe that having […]

Filed Under: General Networking, Product Reviews

Intelligent DDoS Mitigation System – IDMS Compared to Firewall & IPS

As e-commerce continues to proliferate and deliver profitable results, more business is being done online. The growing adoption of online retailing, Internet banking, cloud-based data storage and other commercial services represents a natural evolution of Internet use. For online businesses, however, any downtime can dramatically impact the bottom line. As a result, the growing scale […]

Filed Under: General Networking

How to Ping a Network Port (TCP) Number to Verify if its Open

In this article I’ll describe a few ways to verify over the network if a remote TCP port on a host is open or not. This is a popular troubleshooting method to identify if a specific service or application is running on a remote server or computer. As you might know already, when an application […]

Filed Under: General Networking

Ubiquiti Unifi Security Gateway (USG) Vs Edgerouter 4/Lite

Ubiquiti manufactures networking products (routers, switches, wireless etc) that can serve in a broad range of implementation cases, from Home networks up to large Enterprise environments. The USG (UniFi Security Gateway) and EdgeRouter devices are two product lines that target a similar market – I would say the SOHO and SMB enterprise market (although there […]

Filed Under: General Networking, Product Reviews

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About Networks Training

We Provide Technical Tutorials and Configuration Examples about TCP/IP Networks with focus on Cisco Products and Technologies. This blog entails my own thoughts and ideas, which may not represent the thoughts of Cisco Systems Inc. This blog is NOT affiliated or endorsed by Cisco Systems Inc. All product names, logos and artwork are copyrights/trademarks of their respective owners.

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