TCP/UDP Port Finder

Enter port number (e.g. 21), service (e.g. ssh, ftp) or threat (e.g. nimda)
Database updated - March 30, 2016

Search results for "user"

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Port: 3420/TCP
3420/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • ifcp-port
    iFCP User Port
    IANA
Port: 3420/UDP
3420/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • ifcp-port
    iFCP User Port
    IANA
Port: 3429/TCP
3429/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • gcsp
    GCSP user port
    IANA
Port: 3429/UDP
3429/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • gcsp
    GCSP user port
    IANA
Port: 3435/TCP
3435/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • pacom
    Pacom Security User Port
    IANA
Port: 3435/UDP
3435/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • pacom
    Pacom Security User Port
    IANA
Port: 3498/TCP
3498/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • dashpas-port
    DASHPAS user port
    IANA
Port: 3498/UDP
3498/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • dashpas-port
    DASHPAS user port
    IANA
Port: 3540/TCP
3540/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • pnrp-port
    PNRP User Port
    IANA
Port: 3540/UDP
3540/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • pnrp-port
    PNRP User Port
    IANA
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About TCP/UDP ports

TCP port 3420 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 3420 in the same order in which they were sent. Guaranteed communication over TCP port 3420 is the main difference between TCP and UDP. UDP port 3420 would not have guaranteed communication as TCP.
UDP on port 3420 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 3420 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.
Your IP address
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