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Port 37 Details

known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
37 tcp worm Officially assigned for use by TIME protocol [RFC 868] [RFC 956]
TIME (port 37/tcp) can pose a DOS subnet threat because it has embedded functions used for the identification of critical processing time intervals and the ability to re-issue its output to port 7.

W32.Sober.I@mm (11.19.2004) - mass-mailing worm that uses its own SMTP engine. Affects all current Windows versions. Checks network connectivity by contacting a NTP server on port 37/tcp.
W32.Sober.J@mm (01.30.2005)
W32.Sober.O@mm (05.02.2005)
W32.Sober.X@mm (12.12.2005)
37 tcp,udp TIME protocol (official) Wikipedia
37 tcp trojan ADM worm Trojans
37 tcp,udp time Time IANA
37 tcp,udp time timserver Nmap
37 tcp,udp threat Dimi Bekkoame
37 tcp,udp threat W32.Sober Bekkoame
7 records found
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Related ports: 7  

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External Resources
SANS Internet Storm Center: port 37

Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol. TCP is the most commonly used protocol on the Internet and any TCP/IP network. Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Guaranteed communication/delivery is the key difference between TCP and UDP.

UDP ports use the Datagram Protocol, a communications protocol for the Internet network, transport, and session layers. Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) and makes possible the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming, where dropping some packets is preferable to waiting for delayed data.

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