Network Security Best Practices and Products Definitions

  • A

    anti-replay protocol

    The anti-replay protocol is part of the Internet Engineering Task Force (IETF) Internet Protocol Security (IPSec) standard.

  • Audiobook: Intrusion Prevention Fundamentals

    Intrusion Prevention Fundamentals: An introduction to network attack mitigation with IPS

  • C

    Cisco Information Security Specialist (CISS)

    Cisco Information Security Specialist (CISS) is an entry-level certification attesting that the holder has demonstrated the foundational knowledge and skills required to install and support a Cisco Self-Defending Network... (Continued)

  • D

    dynamic packet filter

    A dynamic packet filter is a firewall facility that can monitor the state of active connections and use this information to determine which network packets to allow through the firewall.

  • H

    HELLO packet

    In the Open Shortest Path First (OSPF) communications protocol - which enables network routers to share information with each other, a HELLO packet is a special packet (message) that is sent out periodically from a router to establish and confirm network adjacency relationships.

  • P

    packet filtering

    On the Internet, packet filtering is the process of passing or blocking packets at a network interface based on source and destination addresses, ports, or protocols.

  • packet mangling

    Packet mangling is the modification of packets at a packet-based network interface before and/or after routing.

  • Point-to-Point Tunneling Protocol (PPTP)

    Point-to-Point Tunneling Protocol (PPTP) is a protocol (set of communication rules) that allows corporations to extend their own corporate network through private "tunnels" over the public Internet.

  • R

    rule base

    In the context of a computer server acting as a firewall, a rule base is a set of rules that govern what is and what is not allowed through the firewall.

  • S

    stateful inspection

    Stateful inspection is a firewall technology that monitors the state of active connections and uses this information to determine which network packets to allow through the firewall. Stateful inspection is also known as dynamic packet filtering.

  • T

    Turtle Firewall

    Turtle Firewall is an open source firewall program written in Perl that supports Linux Kernels 2.4.x and iptables. Turtle Firewall was written by Andrea Frigido of Frisoft, and is available under the GNU Public License (GPL) .

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