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 "iana"

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Port: 42/UDP
42/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • nameserver
    Host Name Server
    IANA
  •  
    ARPA Host Name Server Protocol (Official)
    WIKI
  •  
    Windows Internet Name Service (Unofficial)
    WIKI
Port: 43/TCP
43/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • nicname
    Who Is
    IANA
  •  
    WHOIS protocol (Official)
    WIKI
  • whois
    nicname
    SANS
Port: 43/UDP
43/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • nicname
    Who Is
    IANA
  • whois
    nicname
    SANS
Port: 44/TCP
44/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • mpm-flags
    MPM FLAGS Protocol
    IANA
  • arctic
    [trojan] Arctic
    SANS
  • 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: 44/UDP
44/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • mpm-flags
    MPM FLAGS Protocol
    IANA
Port: 45/TCP
45/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • mpm
    Message Processing Module [recv]
    IANA
Port: 45/UDP
45/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • mpm
    Message Processing Module [recv]
    IANA
Port: 46/TCP
46/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • mpm-snd
    MPM [default send]
    IANA
Port: 46/UDP
46/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • mpm-snd
    MPM [default send]
    IANA
Port: 47/TCP
47/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • ni-ftp
    NI FTP
    IANA
  •  
    NI FTP (Official)
    WIKI
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About TCP/UDP ports

TCP port 42 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 42 in the same order in which they were sent. Guaranteed communication over TCP port 42 is the main difference between TCP and UDP. UDP port 42 would not have guaranteed communication as TCP.
UDP on port 42 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 42 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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