When it comes to network security, a firewall is considered as the most well - known security device from threats and attack from the cyber world. By definition, a firewall is simply a system or (can be a) group of systems that creates a what we call an "Access Control Policy" between two or more networks. This means it acts as a barrier to potential attacks and threats to penetrate illegally inside a network system. Generally, firewalls fall into three categories. And let me give a basic concept of each three:
a.) Dedicated Firewalls - Mostly, these are hardware appliance - based devices that are available to secure a network. It adds features such as stateful, application-based filtering, dynamic per-user authentication and authorization, defense against network attacks, Java blocking, and real-time alerts. It offers a high - level of network security and these are mainly used by companies that needs to protect their networks (especially there mainframe computers) from serious threats and attacks that may jeopardized its operation within the network.
b.) Server - Based Firewalls - This is basically security solution that runs on network operating system (NOS) such as the Microsoft ISA Server or Novell Border Manager. One of the popular server - based firewall nowadays however is so - called "Endian Firewall".They offer a mid -level network security since they run on general - purpose OS such an NOS.
c.) Personal Firewall - These are firewalls that usually reside on a user's PC. They just protect your computer from threats and attacks that you may acquire via an internet connection. Majority of the anti - virus softwares includes these personal firewalls.
Hope you have learned something from this topic that I've shared to you once again...Thanks for reading...
