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  2. Comparison of firewalls - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_firewalls

    security gateways Proprietary operating system Junos: SonicWall: Proprietary: Included on Dell appliance Proprietary operating system SonicOS. Based on the Linux kernel Barracuda Firewall Proprietary: Included Firewall Next Generation appliance Windows-based appliance embedded firewall distribution Cyberoam: Proprietary: Included Firewall ...

  3. Private VLAN - Wikipedia

    en.wikipedia.org/wiki/Private_VLAN

    A firewall can replace a router, and then hosts can be slowly moved to their secondary VLAN assignment without changing their IP addresses. There is a need for a firewall with many tens, hundreds or even thousands interfaces. Using Private VLANs the firewall can have only one interface for all the segregated networks.

  4. Private network - Wikipedia

    en.wikipedia.org/wiki/Private_network

    In Internet networking, a private network is a computer network that uses a private address space of IP addresses. These addresses are commonly used for local area networks (LANs) in residential, office, and enterprise environments. Both the IPv4 and the IPv6 specifications define private IP address ranges. [1] [2]

  5. Using McAfee: Firewalls - AOL Help

    help.aol.com/articles/Using-McAfee-Firewalls

    Setting the firewall's security level to Stealth blocks all inbound network connections, except open ports. This setting completely hides your computer's presence on the Internet. When the security level is set to Stealth, the firewall alerts you when new programs attempt outbound Internet connections or receive inbound connection requests.

  6. Personal firewall - Wikipedia

    en.wikipedia.org/wiki/Personal_firewall

    A firewall can be configured to allow different security policies for each network. Unlike network firewalls, many personal firewalls are able to control network traffic allowed to programs on the secured computer. When an application attempts an outbound connection, the firewall may block it if blacklisted, or ask the user whether to blacklist ...

  7. Network security - Wikipedia

    en.wikipedia.org/wiki/Network_security

    Network security covers a variety of computer networks, both public and private, that are used in everyday jobs: conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.

  8. Hole punching (networking) - Wikipedia

    en.wikipedia.org/wiki/Hole_punching_(networking)

    When an outbound connection from a private endpoint passes through a firewall, it receives a public endpoint (public IP address and port number), and the firewall translates traffic between them. Until the connection is closed, the client and server communicate through the public endpoint, and the firewall directs traffic appropriately.

  9. MAC address - Wikipedia

    en.wikipedia.org/wiki/MAC_address

    Changing MAC addresses is necessary in network virtualization. In MAC spoofing, this is practiced in exploiting security vulnerabilities of a computer system. Some modern operating systems, such as Apple iOS and Android, especially in mobile devices, are designed to randomize the assignment of a MAC address to network interface when scanning ...

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