Answer: You could utilize packet filtering to block certain packets from traveling and entering over a network. This is usually done on a firewall that would be having a public-facing IP on the Internet to protect internal users.
Answer: Email isn’t a secure transmission, so some companies would be choosing to encrypt communication. You could utilize PGP, which is software that would be letting you encrypt email messages with a public-private key combination.
Answer: VPN. A Virtual Private Network would be allowing the users to “tunnel” from the Internet to the private network. You would be still having a firewall and security in place, but the VPN would be protecting user information as well as hiding data sent from the user’s home computer to the private network.
Answer: A cipher is a way for masking a plain text message into another message. It would be utilized in cryptography for jumbling text so that the receiver and sender are the only two people who would be deciphering the message and read its content.
Answer: Role-based access control would be putting the users into buckets. These buckets or roles would be then assigned to specific areas of the network. This makes it much easier for keeping the track of users who would be having access to resources.
Answer: Digital signatures would be utilized for deciphering asymmetric keys. Asymmetric keys would be utilized for sending and receiving messages. The receiver and sender decipher messages utilizing a public and private key.
Answer: A denial of service attack would be sending a massive amount of packets to another network in an effort for saturating the resources, crash them, as well as force the resources to become unobtainable.
Answer: Since routers could be detected and block denial of service attacks, hackers utilize the distributed denial of service attacks utilizing other computers that have some kind of Trojan horse or virus that would be allowing the attacker to utilize the machine for a denial of service attack.
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