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      • UDP scan is activated with the -sU option. It can be combined with a TCP scan type such as SYN scan (-sS) to check both protocols during the same run.
      nmap.org/book/scan-methods-udp-scan.html

      UDP Scan (-sU) | Nmap Network Scanning

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  7. www.upguard.com › blog › best-open-port-scannersTop 5 Free Open Port Check Tools in 2024 - UpGuard

    Sep 16, 2024 · Fortunately, there are free tools available that can detect all of the open ports in your ecosystem so that you can then assess the level of criticality of each exposure. In this post, we discuss the 5 best free open port scanners you can start using today to check for open ports in your ecosystem.

    • Can open Port Checker tools scan both TCP and UDP ports?1
    • Can open Port Checker tools scan both TCP and UDP ports?2
    • Can open Port Checker tools scan both TCP and UDP ports?3
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