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  2. Cisco ASA - Wikipedia

    en.wikipedia.org/wiki/Cisco_ASA

    Cisco ASA has become one of the most widely used firewall/VPN solutions for small to medium-sized businesses. Early reviews indicated the Cisco GUI tools for managing the device were lacking. [4] A security flaw was identified when users customized the Clientless SSL VPN option of their ASA's but was rectified in 2015. [5]

  3. List of TCP and UDP port numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

    This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for bidirectional traffic. TCP usually uses port numbers that match the services of the corresponding UDP implementations, if they exist, and vice versa.

  4. List of IP protocol numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_IP_protocol_numbers

    This is a list of the IP protocol numbers found in the field Protocol of the IPv4 header and the Next Header field of the IPv6 header.It is an identifier for the encapsulated protocol and determines the layout of the data that immediately follows the header.

  5. Application-level gateway - Wikipedia

    en.wikipedia.org/wiki/Application-level_gateway

    In order for these protocols to work through NAT or a firewall, either the application has to know about an address/port number combination that allows incoming packets, or the NAT has to monitor the control traffic and open up port mappings (firewall pinholes) dynamically as required. Legitimate application data can thus be passed through the ...

  6. Firewall pinhole - Wikipedia

    en.wikipedia.org/wiki/Firewall_pinhole

    In computer networking, a firewall pinhole is a port that is not protected by a firewall to allow a particular application to gain access to a service on a host in the network protected by the firewall. [1] [2] Leaving ports open in firewall configurations exposes the protected system to potentially malicious abuse. A fully closed firewall ...

  7. Comparison of firewalls - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_firewalls

    Barracuda Firewall Proprietary: Included Firewall Next Generation appliance Windows-based appliance embedded firewall distribution Cyberoam: Proprietary: Included Firewall Sophos appliance Windows-based appliance embedded firewall distribution D-Link: Proprietary: Included Firewall DFL Windows-based appliance embedded firewall distribution ...

  8. List of Cisco products - Wikipedia

    en.wikipedia.org/wiki/List_of_Cisco_products

    Stealthwatch, Identity Services Engine (ISE), Tetration, Adaptive Security Appliance (ASA), Next Generation Firewall (NGFW), Firewall Management Center (FMC), SecureX, Umbrella, CloudLock, Duo, Secure Email, Cisco Cloud Mailbox Defense, Secure Web Appliance, Cloud Secure Email, Secure Email and Web Manager, AnyConnect, Virtual Private Network ...

  9. Cisco PIX - Wikipedia

    en.wikipedia.org/wiki/Cisco_PIX

    Cisco PIX (Private Internet eXchange) was a popular IP firewall and network address translation (NAT) appliance.It was one of the first products in this market segment. In 2005, Cisco introduced the newer Cisco Adaptive Security Appliance (), that inherited many of the PIX features, and in 2008 announced PIX end-of-sale.

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