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Search TCP / UDP Port Assignment Database

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Search result for: 123

From: [IANA] [NMAP] [WG] [WP] [SANS]

Service Port Prot. Description Notes
ntp 123 tcp Network Time Protocol [IANA] [RFC5905]
ntp 123 udp Network Time Protocol [IANA] [RFC5905]
ntp 123 tcp # Network Time Protocol [NMAP]
ntp 123 udp # Network Time Protocol [NMAP]
123 tcp AppSpeed: from: AppSpeed Server - to: AppSpeed Probe [WG] NTP services
123 udp ESX 3.x: from: ESXi/ESX Host - to: NTP Time Server [WG] NTP Client
123 udp ESX 4.x: from: ESXi/ESX Host - to: NTP Time Server [WG] NTP Client
123 udp ESXi 3.x: from: ESXi/ESX Host - to: NTP Time Server [WG] NTP Client
123 udp ESXi 4.x: from: ESXi/ESX Host - to: NTP Time Server [WG] NTP Client
123 udp ESXi 5.x: from: ESXi/ESX Host - to: NTP Time Server [WG] NTP Client
123 udp For internal network communication between multiple TiVo boxes, TiVo Desktop software, and other TiVo applications, this port should be unrestricted within home network. [WG]
ntp 123 udp Network Time Protocol (NTP) [WG]
W32Time 123 udp NTP - Windows Time [WG]
W32Time 123 udp SNTP - Windows Time [WG]
123 udp vCenter Log Insight 1.x: from: Log Insight - to: NTP Server [WG] Time synchronization with NTP server
123 udp vShield 1.x: from: vShield Time Synchronization - to: vShield Manager (NTP Server) [WG] NTP time synchronization with vShield Manager server
123 udp vShield 4.x: from: vShield Time Synchronization - to: vShield Manager (NTP Server) [WG] NTP time synchronization with vShield Manager server
123 tcp/udp XenServer - Infrastructure [WG] NTP
123 tcp/udp Network Time Protocol (NTP), used for time synchronization [WP] Official
NetController 123 tcp (trojan) Net Controller [SANS]
ntp 123 tcp Network Time Protocol [SANS]
ntp 123 udp Network Time Protocol [SANS]

How to use:

To search by port enter a number in the range between 0 and 65535. To search service / protocol description by keyword enter a text string at least three characters long. Wild-card (*) is supported if it is the last character in the search string. Alternatively, select a port from one of the ranges listed below.

Port range: 0-1023

0-99
100-199
200-299
300-399
400-499
500-599
600-699
700-799
800-899
900-999
1000-1023

0-1023 - Well-known or System Ports
1024-49151 - Registered or User Ports
49152-65535 - Dynamic/Private or Ephemeral Ports

Information Sources:
[IANA]  IANA Service Name and Transport Protocol Port Number Registry
[NMAP]  NMAP.org well known service port numbers
[WG]  WintelGuy.com port number database compiled from many different sources, including Microsoft, VMWare, Citrix, Oracle, etc.
[WP] Wikipedia - List of TCP and UDP port numbers
[SANS]  SANS Inst. / DShield service list