July, 11
by RT

All about SD WAN – Brief but Complete Intro!

SD WAN, in full software-defined wide area network, is a model of networking that works by separating the hardware part of a network from the mechanisms that control it.

All about SD WAN – Brief but Complete Intro!

SD WAN allows for the implementation of higher work rate wide area networks even when the internet access is a slow one. For this reason, a business can replace most of its costly equipment for less costly ones and still be able to enjoy quality services. Most firms have seen the benefit of this technology and are actively deploying it to take care of their communication needs. 

The Need for SD WAN

Modern technology and business have made it necessary to communicate over large distances. For example, a firm in the United States may have branches in the East and need to communicate on a real-time basis. However, the great distance makes it hard to have reliable communication due to issues such as service outages, jitter, service loss, network congestion, packet loss and many other issues. Modern communication requires large data capacities to work effectively with aspects such as video conferencing and others. Having the equipment to carry out these aspects of communication is costly. 

These two issues are addressed by SD WAN which allows a model that does not rely on the physical capabilities of the communication equipment but how they can be created and made to work with the existing models. It cuts the infrastructure costs by a significant value. Also, one does not need to change many aspects of their existing models to be able to harness the capabilities of SD WAN. 

Characteristics of SD WAN

SD WAN has four main traits namely;

  1. Dynamic path selection; this trait allows it to be resilient and allow for the sharing of the load on the network. 
  2. Compatible with many types of connections; SD WAN works with various connections including the modern LTE connections, frame relay, MPLS and many others. 
  3. Support for third party services. These include VPN networks, firewalls, optimization controllers for WAN, web gateways and many others. 
  4. Simple and intuitive user interface. SD WAN is known for many things one of which is the ease of use it has. 

The Features of SD WAN

The features that set SD WAN apart from the crowd include;

  • Better services; SD WAN works by focusing the resources to the most critical parts of the communications of the firm. For example, it channels the most needed communication flow to the fastest channels or splits it between various communication channels for faster information transfer. 
  • Reliability; the model of SD WAN is to constantly monitor the network to find any issues with it. In the case that a part of the network is down, SD WAN automatically reroutes the data to the working channels to maintain the workflow.
  • High security levels; SD WAN is built on IPsec which makes it very secure from external and internal attacks on the network. 

These aspects point out to the fact that SD WAN is one of the most reliable of wide area networks one can use for their business communication needs. 

Advantages of WAN

The WAN set up by SD WAN experts has many advantages over common wide area networks. However, you need to be aware of the general advantages of WAN before anything. 

Centralizes Operations

With a WAN, the operations of a business will be run in one place. A WAN has a single control center from which all operations can be run. 

Is Faster than Broadband

If you use wired WAN, you will likely use leased lines. These are faster than simple broadband and this allows faster work. It also saves on the costs of downtime. 

Has Privacy

With a WAN, your firm can determine who views its data and activities and keeps out those not needed. This gives the employees peace of mind. 

Reduces on Downtime

With a well-structured WAN, the users are assured of always having a running network to take care of the needs of their work. It thus ensures smooth running of the companies that use them. 

No Need for ISDN

ISDN is costly and makes the network at times cumbersome. With WAN, one can operate their network without ISDN. 

These are only a few of the advantages of having a WAN taking care of the needs of the firm. 

How to Improve the Security of a Network through WAN

Our networks are vulnerable to hacking and other evils that are big a risk to our data. For this reason, we have to put in place various strategies, to ensure we keep the bad guys out. Below are four simple steps that can be taken to improve a Network’s security:

Backing data up

Even when you have carried out other steps, always ensure you have the latest backup of the network and the data stored in there lest a new type of threat finds you unawares. Better be safe. 

Security software

You can install software to filter spam, block malware, block phishing, block virus and any other types of malicious software on your network. Even with these, keep updating them and avoid going for the free ones as they don't protect you that much. 

Password changes

Always change your passwords for the best level of security. Even when you have strong passwords on your network, they might fall into the wrong hands hence the need to keep clanging them to throw off anyone trailing them. 

Secure culture

Your employees should also have a security culture that ensures no loopholes are available for a hacker to enter the network. While most hacks are carried out by the people outside the firm, any lapse on the internal security protocol can easily allow another party to enter the system and wreak havoc. 

With these steps, you are sure that your network is secure and can be relied on for the best user experience. For most people, these measures are enough to keep them safe.  


Send a comment