TCP/UDP Port Finder

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Database updated - March 30, 2016

Search results for "networks"

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Port: 646/UDP
646/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • ldp
    LDP
    IANA
  •  
    LDP, Label Distribution Protocol, a routing protocol used in MPLS networks (Official)
    WIKI
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 646/TCP
646/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • ldp
    LDP
    IANA
  •  
    LDP, Label Distribution Protocol, a routing protocol used in MPLS networks (Official)
    WIKI
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 1645/TCP
1645/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • sightline
    SightLine
    IANA
  •  
    radius auth, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers, but see port 1812 below) (Unofficial)
    WIKI
  • datametrics
    datametrics
    SANS
  • threat
    [threat] Remote Authentication Dial In User Service (RADIUS) RADIUS, or Remote Authentication Dial-In User service, is a freely available distributed security system developed by Lucent Technologies InterNetworking Systems. Lucent has worked with the Internet Engineering Task Force (IETF) 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.
    Bekkoame
Port: 1645/UDP
1645/UDP - Known port assignments (5 records found)
  • Service
    Details
    Source
  • sightline
    SightLine
    IANA
  •  
    radius auth, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers, but see port 1812 below) (Unofficial)
    WIKI
  • datametrics
    datametrics
    SANS
  • radius
    radius authentication
    SANS
  • threat
    [threat] Remote Authentication Dial In User Service (RADIUS) RADIUS, or Remote Authentication Dial-In User service, is a freely available distributed security system developed by Lucent Technologies InterNetworking Systems. Lucent has worked with the Internet Engineering Task Force (IETF) 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.
    Bekkoame
Port: 1646/TCP
1646/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • sa-msg-port
    sa-msg-port
    IANA
  •  
    radius acct, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers, but see port 1813 below) (Unofficial)
    WIKI
Port: 1646/UDP
1646/UDP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • sa-msg-port
    sa-msg-port
    IANA
  •  
    radius acct, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers, but see port 1813 below) (Official)
    WIKI
  • radacct
    radius accounting
    SANS
  • threat
    [threat] 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
Port: 1911/TCP
1911/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • mtp
    Starlight Networks Multimedia Transport Protocol
    IANA
  • trojan
    [trojan] Arctic. Remote Access / Keylogger / Steals passwords. Works on Windows 95, 98 and ME. It uses the same source code as GirlFriend. Aliases: Backdoor.Arctic.06, Artic
    Simovits
Port: 1911/UDP
1911/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • mtp
    Starlight Networks Multimedia Transport Protocol
    IANA
Port: 1997/TCP
1997/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • gdp-port
    cisco Gateway Discovery Protocol
    IANA
  •  
    Chizmo Networks Transfer Tool (Official)
    WIKI
Port: 2120/UDP
2120/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • qencp
    Quick Eagle Networks CP
    IANA
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About TCP/UDP ports

TCP port 646 uses the Transmission Control Protocol. TCP is one of the main protocols in TCP/IP networks. TCP is a connection-oriented protocol, it requires handshaking to set up end-to-end communications. Only when a connection is set up user's data can be sent bi-directionally over the connection.
Attention! TCP guarantees delivery of data packets on port 646 in the same order in which they were sent. Guaranteed communication over TCP port 646 is the main difference between TCP and UDP. UDP port 646 would not have guaranteed communication as TCP.
UDP on port 646 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 646 thinks that error checking and correction is not necessary or performed in the application, avoiding the overhead of such processing at the network interface level.
UDP (User Datagram Protocol) is a minimal message-oriented Transport Layer protocol (protocol is documented in IETF RFC 768).
Application examples that often use UDP: voice over IP (VoIP), streaming media and real-time multiplayer games. Many web applications use UDP, e.g. the Domain Name System (DNS), the Routing Information Protocol (RIP), the Dynamic Host Configuration Protocol (DHCP), the Simple Network Management Protocol (SNMP).
TCP vs UDP - TCP: reliable, ordered, heavyweight, streaming; UDP - unreliable, not ordered, lightweight, datagrams.
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