Terminology

Intrusion Prevention System (IPS)
    An IPS, or intrusion prevention system, is a hardware device or software application that detects attacks from hackers. Network-based intrusion detection systems examine the traffic on a network for signs of unauthorized access or attacks in progress, while host-based systems look at processes running on a local machine for activity an administrator has defined as "bad".

Instant Messaging (IM)
    Instant messaging is a type of communications service that enables you to create a kind of private chat room with another individual in order to communicate in real time over the Internet.

Peer-to-Peer (P2P)
    Peer-to-peer is a method of distributing files over a network where all computers are treated as equals (in contrast to a client/server architecture). Using P2P client software, a client is able to receive files from another client. Some P2P file distribution systems require a centralized database of available files (such as Napster), while other distribution systems like Gnutella are decentralized.

 

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