Jul 16, 2020 · DNS Dynamic Update Service for a given domain may not necessarily be provided by the principal name servers as advertised by the domain's "NS" records, and may not necessarily always be provided on port 53. The "_dns-update._udp.." SRV record gives the target host and port where DNS Dynamic Update Service is provided for the named domain.

Nov 15, 2019 NVD - Control - SC-41 - PORT AND I/O DEVICE ACCESS Supplemental Guidance Connection ports include, for example, Universal Serial Bus (USB) and Firewire (IEEE 1394). Input/output (I/O) devices include, for example, … Understanding TCP/UDP Port Functions | Network+ Exam Cram

Oct 04, 2009 · Replace the [port_number] with the actual port number that you want to check and hit enter. If the port is being used by any application, then that application’s detail will be shown. The number, which is shown at the last column of the list, is the PID (process ID) of that application.

I'd a scan task and I faced following result . Host is up (0.032s latency). Scanned at 2012-10-25 16:06:38 AST for 856s PORT STATE SERVICE VERSION 1/tcp open tcpwrapped 3/tcp open tcpwrapped 4/tcp open tcpwrapped . . 19/tcp open tcpwrapped 20/tcp open tcpwrapped 21/tcp open tcpwrapped 22/tcp open tcpwrapped 23/tcp open tcpwrapped . . 64623/tcp open tcpwrapped 64680/tcp open tcpwrapped …

Supplemental Guidance Connection ports include, for example, Universal Serial Bus (USB) and Firewire (IEEE 1394). Input/output (I/O) devices include, for example, Compact Disk (CD) and Digital Video Disk (DVD) drives.

Because protocol UDP port 53 was flagged as a virus (colored red) does not mean that a virus is using port 53, but that a Trojan or Virus has used this port in the past to communicate. UDP 53 – Disclaimer. We do our best to provide you with accurate information on PORT 53 and work hard to keep our database up to date. This is a free service