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  2. 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.Such an application may be used by administrators to verify security policies of their networks and by attackers to identify network services running on a host and exploit vulnerabilities.

  3. ShieldsUP - Wikipedia

    en.wikipedia.org/wiki/Shieldsup

    ShieldsUP is an online port scanning service created by Steve Gibson of Gibson Research Corporation.The purpose of the utility is to alert the users of any ports that have been opened through their firewalls or through their NAT routers, which can be used by malicious users to take advantage of security vulnerabilities.

  4. Wikipedia:WikiProject Open proxies/Guide to checking open ...

    en.wikipedia.org/wiki/Wikipedia:WikiProject_Open...

    Port scanning, and nmap, may help to identify which ports are open on suspect IPs, however, even when it says that proxy ports are open the default scan does not check to see if it is an open proxy using that port. It could be a closed proxy expecting authentication, or even a normal website.

  5. Nmap - Wikipedia

    en.wikipedia.org/wiki/Nmap

    For example, listing the hosts that respond to TCP and/or ICMP requests or have a particular port open. Port scanning – Enumerating the open ports on target hosts. Version detection – Interrogating network services on remote devices to determine application name and version number. [11] Ping ScanCheck host by sending ping requests.

  6. Superscan - Wikipedia

    en.wikipedia.org/wiki/Superscan

    SuperScan is a free connect-based port scanning software designed to detect open TCP and UDP ports on a target computer, determine which services are running on those ports, and run queries such as whois, ping, ICMP traceroute, and Hostname lookups.

  7. Idle scan - Wikipedia

    en.wikipedia.org/wiki/Idle_scan

    Some port scanners scan only the most common port numbers, or ports most commonly associated with vulnerable services, on a given host. See: List of TCP and UDP port numbers. The result of a scan on a port is usually generalized into one of three categories: Open or Accepted: The host sent a reply indicating that a service is listening on the port.

  8. Shodan (website) - Wikipedia

    en.wikipedia.org/wiki/Shodan_(website)

    Shodan is a search engine that lets users search for various types of servers (webcams, routers, servers, etc.) connected to the internet using a variety of filters. [1] Some have also described it as a search engine of service banners, which is metadata that the server sends back to the client. [2]

  9. netcat - Wikipedia

    en.wikipedia.org/wiki/Netcat

    netcat (often abbreviated to nc) is a computer networking utility for reading from and writing to network connections using TCP or UDP.The command is designed to be a dependable back-end that can be used directly or easily driven by other programs and scripts.

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