What is Firewall in Web Hosting?

[Danny_Goodwin]

A firewall is a security measure that can be used to protect a web hosting server. For example, a firewall can block certain types of traffic from reaching the server or allow only certain types of traffic. By doing this, a firewall can help to prevent unauthorized access to the server and can also help to protect against malware and other attacks.

[Clay Page]

Can anyone tell me what a firewall is? I am about to purchase the shared web hosting and went through the plans and features, which showed the server firewall, but I don't know what it is.

I appreciate any help you can provide.