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 "applicat"

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Port: 119/TCP
119/TCP - Known port assignments (5 records found)
  • Service
    Details
    Source
  • nntp
    Network News Transfer Protocol
    IANA
  •  
    Network News Transfer Protocol (NNTP) - retrieval of newsgroup messages (Official)
    WIKI
  • nntp
    Network News Transfer Protocol (NNTP). Used by applications that read newsgroups.
    Apple
  • threat
    [threat] Happy99
    Bekkoame
  • threat
    [threat] Horrortel
    Bekkoame
Port: 187/UDP
187/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • aci
    Application Communication Interface
    IANA
Port: 187/TCP
187/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • aci
    Application Communication Interface
    IANA
Port: 385/UDP
385/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • ibm-app
    IBM Application
    IANA
Port: 385/TCP
385/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • ibm-app
    IBM Application
    IANA
Port: 389/TCP
389/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • ldap
    Lightweight Directory Access Protocol
    IANA
  •  
    Lightweight Directory Access Protocol (LDAP) (Official)
    WIKI
  • ldap
    Lightweight Directory Access Protocol (LDAP). Used by applications that look up addresses, such as Mail and Address Book.
    Apple
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: 542/UDP
542/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • commerce
    commerce
    IANA
  •  
    commerce (Commerce Applications) (Official)
    WIKI
  • commerce
    -
    SANS
Port: 542/TCP
542/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • commerce
    commerce
    IANA
  •  
    commerce (Commerce Applications) (Official)
    WIKI
  • commerce
    -
    SANS
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About TCP/UDP ports

TCP port 119 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 119 in the same order in which they were sent. Guaranteed communication over TCP port 119 is the main difference between TCP and UDP. UDP port 119 would not have guaranteed communication as TCP.
UDP on port 119 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 119 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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