What is Whitelisting?

Whitelisting is a security measure that is used to help protect computers and networks from malicious attackers. It is a process of creating a list of approved items, such as applications, websites, and IP addresses, that are allowed to access a system or network. Any requests made to the system or network that are not on the approved list are denied access. Whitelisting is a popular and effective way of protecting a network or computer from malicious actors.

Why is Whitelisting Useful?

Whitelisting is a useful tool in maintaining a secure system. By limiting the number of approved applications and websites that can be accessed, it reduces the chances of malicious attackers gaining access to the system or network. This also reduces the chances of unknowingly downloading and running malicious software, as whitelisted applications are usually digitally signed and verified.

Whitelisting can also be used to limit the amount of bandwidth that is being used. By limiting the approved applications, websites, and IP addresses, it reduces the amount of bandwidth required as fewer requests are being made to the system or network.

How to Use Whitelisting?

Using whitelisting is relatively straightforward. First, the system administrator needs to make a list of approved applications, websites, and IP addresses that are allowed access to the system or network. This list may be based on a type of application, such as trusted e-mail clients or approved websites. Then, the list is applied to the system or network and any requests that are made that are not included on the approved list are denied access.

Whitelisting is a useful tool in helping to secure a system or network. By limiting the amount of approved applications, websites, and IP addresses, it reduces the chances of malicious attackers gaining access and it also reduces the amount of bandwidth that is being used. When used along with other security measures, such as strong passwords and antivirus software, whitelisting is an effective means of protecting a system or network.