A firewall is a software solution formerly hardware that is responsible for filtering the data!
All data and communications entering or leaving a network or computer.
You could imagine a firewall as a wall ( ... see Image-1 ) that decides who enters or leaves a room. A firewall blocks or restricts network ports. Firewalls are commonly used to prevent unauthorized access to corporate and home networks.
Dangerous file types are any files with the potential to contain viruses or spyware, commonly known as malware These files are particularly intent on damaging
The often used idiom "Thats the be-all and end-all of the story", solution, problems, etc. stands for beginning and end Word literally stands for "beginning