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  2. List of TCP and UDP port numbers - Wikipedia

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

    The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the ...

  3. Simple Network Management Protocol - Wikipedia

    en.wikipedia.org/wiki/Simple_Network_Management...

    The manager receives notifications (Traps and InformRequests) on port 162. The agent may generate notifications from any available port. When used with Transport Layer Security or Datagram Transport Layer Security, requests are received on port 10161 and notifications are sent to port 10162. [3] SNMPv1 specifies five core protocol data units ...

  4. Port scanner - Wikipedia

    en.wikipedia.org/wiki/Port_scanner

    A port scanner is an application designed to probe a server or host for open ports. ... the port scanner generates raw IP packets itself, and monitors for responses ...

  5. Network tap - Wikipedia

    en.wikipedia.org/wiki/Network_tap

    A network tap is a system that monitors events on a local network. A tap is typically a dedicated hardware device, which provides a way to access the data flowing across a computer network. The network tap has (at least) three ports: an A port, a B port, and a monitor port. A tap inserted between A and B passes all traffic (send and receive ...

  6. NetFlow - Wikipedia

    en.wikipedia.org/wiki/NetFlow

    NetFlow is a feature that was introduced on Cisco routers around 1996 that provides the ability to collect IP network traffic as it enters or exits an interface. By analyzing the data provided by NetFlow, a network administrator can determine things such as the source and destination traffic, class of service, and the causes of congestion.

  7. Stateful firewall - Wikipedia

    en.wikipedia.org/wiki/Stateful_firewall

    Monitors the entire session for the state of the connection, while also checking IP addresses and payloads for more thorough security; Offers a high degree of control over what content is let in or out of the network; Does not need to open numerous ports to allow traffic in or out; Delivers substantive logging capabilities

  8. 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.

  9. Port mirroring - Wikipedia

    en.wikipedia.org/wiki/Port_mirroring

    Port mirroring on a Cisco Systems switch is generally referred to as Switched Port Analyzer (SPAN) or Remote Switched Port Analyzer (RSPAN). Other vendors have different names for it, such as Roving Analysis Port (RAP) on 3Com switches. Network engineers or administrators use port mirroring to analyze and debug data or diagnose errors on a ...

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