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Port 1646 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 1646 |
udp |
RADIUS |
RADIUS (Remote Authentication Dial-In User Service, RFC 2865 and RFC 2866 ) is a freely available distributed security system developed by Lucent Technologies InterNetworking Systems. Lucent has worked with the IETF (Internet Engineering Task Force) to define RADIUS as an interoperable method for distributed security on the Internet. RADIUS was designed based on a previous recommendation from the IETF's Network Access Server Working Requirements Group.
Uses UDP ports 1645 & 1646, or 1812 & 1813. |
SG
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| 1646 |
tcp,udp |
|
radacct, RADIUS accounting protocol (default for Cisco and Juniper Networks RADIUS servers) (unofficial) |
Wikipedia
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| 1646 |
udp |
radacct |
radius accounting |
SANS
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| 1646 |
udp |
radacct |
radius accounting |
Nmap
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| 1646 |
udp |
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Remote Authentication Dial In User Service (RADIUS) RADIUS accounting consists of an accounting server and accounting clients (Lucent (formerly Livingston Enterprises)PortMaster products). RADIUS accounting starts automatically when the RADIUS server starts. On a UNIX host, the radiusd accounting daemon is a child process of the radiusd authentication daemon. The RADIUS accounting server uses the User Datagram Protocol (UDP), and listens for UDP packets at port 1646 by default. |
Bekkoame
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| 1646 |
tcp,udp |
sa-msg-port |
sa-msg-port |
IANA
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6 records found
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jump to:
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Related ports: 1645 1812 1813
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External Resources
SANS ISC: port 1646
Notes:
Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify
a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly
used port numbers for well-known internet services.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.
TCP ports use the Transmission Control Protocol, the most commonly used protocol
on the Internet and any TCP/IP network. 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. Like TCP, UDP is used in combination with IP (the Internet Protocol)
and facilitates 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 and realtime gaming, where dropping some packets is preferable to waiting for delayed data.
When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them.
This can be accomplished in both Windows command prompt and Linux variants using the "netstat -aon" command.
We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software.
For more detailed and personalized help please use our forums.
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