1.How can the proxy firewall protect the server from the intruders?
2.Why do the servers need DMZ?
3.Why VPN is more secure than the other firewalls?
4.Proof whether the credit card number: 5507214688525371 is correct.
5.What is the advantage of the host-based restriction?
Please answer in your own language (in Thai or English) based on your understanding. Copying the sentences or paragraphs from books, websites, oretc. will result Zero mark on that question.