TCP/UDP Port Finder

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Database updated - March 30, 2016

Search results for "support"

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Port: 33/TCP
33/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • dsp
    Display Support Protocol
    IANA
  •  
    Display Support Protocol (Official)
    WIKI
Port: 33/UDP
33/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • dsp
    Display Support Protocol
    IANA
  •  
    Display Support Protocol (Official)
    WIKI
Port: 406/UDP
406/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • imsp
    Interactive Mail Support Protocol
    IANA
Port: 406/TCP
406/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • imsp
    Interactive Mail Support Protocol
    IANA
Port: 450/UDP
450/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • tserver
    Computer Supported Telecomunication Applications
    IANA
  • tserver
    -
    SANS
Port: 450/TCP
450/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • tserver
    Computer Supported Telecomunication Applications
    IANA
  • tserver
    -
    SANS
Port: 641/UDP
641/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • repcmd
    repcmd
    IANA
  •  
    SupportSoft Nexus Remote Command (control/listening): A proxy gateway connecting remote control traffic (Official)
    WIKI
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 641/TCP
641/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • repcmd
    repcmd
    IANA
  •  
    SupportSoft Nexus Remote Command (control/listening): A proxy gateway connecting remote control traffic (Official)
    WIKI
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 653/UDP
653/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • repscmd
    RepCmd
    IANA
  •  
    SupportSoft Nexus Remote Command (data): A proxy gateway connecting remote control traffic (Official)
    WIKI
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 653/TCP
653/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • repscmd
    RepCmd
    IANA
  •  
    SupportSoft Nexus Remote Command (data): A proxy gateway connecting remote control traffic (Official)
    WIKI
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
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About TCP/UDP ports

TCP port 33 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 33 in the same order in which they were sent. Guaranteed communication over TCP port 33 is the main difference between TCP and UDP. UDP port 33 would not have guaranteed communication as TCP.
UDP on port 33 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 33 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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