A firewall is a network security device on a particular server. Cisco is an organization that provides IT security solutions to big corporates and organizations. Hence the name cisco firewall. It works on a set of rules which is known as protocols. Protocols are nothing but some sort of program which defines the incoming and outgoing request through a firewall on the server. We can say that it is a type of gateway for all types of requests. The program code defines which incoming and outgoing requests should be allowed or rejected. A firewall is a software, hardware, or both. When it acts as software, it is installed on the server-side. When we say hardware then its hardware structure is designed then it is installed on that well-structured device. After all these kinds of stuff, it is connected with the server to perform tasks. Refurbished cisco firewalls can be available in good price as compared to new firewall.

Go top