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 "nam"

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Port: 42/TCP
42/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • nameserver
    Host Name Server
    IANA
  •  
    ARPA Host Name Server Protocol (Official)
    WIKI
  •  
    Windows Internet Name Service (Unofficial)
    WIKI
  • threat
    [threat] W32.Dasher
    Bekkoame
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: 53/TCP
53/TCP - Known port assignments (11 records found)
  • Service
    Details
    Source
  • domain
    Domain Name System (DNS). MacDNS, FaceTime
    Apple
  •  
    Domain Name System (DNS) (Official)
    WIKI
  • domain
    Domain Name Server
    IANA
  • threat
    [threat] W32.Dasher
    Bekkoame
  • threat
    [threat] W32.Spybot
    Bekkoame
  • trojan
    [trojan] ADM worm. Worm / Rootkit / Backdoor. Works on Unix (Linux). Affects Linux RedHat 4.0 to 5.2. Aliases: ADM Inet w0rm, Linux.ADM.Worm
    Simovits
  • trojan
    [trojan] li0n. Worm / Steals passwords / Rootkit dropper / Hacking tool / Distributed DoS tool. Works on Unix (Linux), together with BIND 8.2. Aliases: The Lion worm, Linux/Lion, 1i0n, Lion
    Simovits
  • trojan
    [trojan] MscanWorm.
    Simovits
  • trojan
    [trojan] MuSka52. Remote Access / Keylogger / Steals passwords / ICQ trojan / AIM trojan. Works on Windows, together with AOL's Messanger AIM. Aliases: Backdoor.QT, BackDoor.Muska, M52
    Simovits
  • threat
    [threat] Civcat
    Bekkoame
  • threat
    [threat] Esteems
    Bekkoame
Port: 53/UDP
53/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • domain
    Domain Name Server
    IANA
  •  
    Domain Name System (DNS) (Official)
    WIKI
  • domain
    Domain Name System (DNS). MacDNS, FaceTime
    Apple
Port: 101/TCP
101/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • hostname
    NIC Host Name Server
    IANA
  •  
    NIC host name (Official)
    WIKI
  • threat
    [threat] Udps
    Bekkoame
  • trojan
    [trojan] Skun. Remote Access / Destructive trojan. Works on Windows. Aliases: Backdoor.Skun
    Simovits
Port: 101/UDP
101/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • hostname
    NIC Host Name Server
    IANA
  • threat
    [threat] Udps
    Bekkoame
Port: 105/TCP
105/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • csnet-ns
    Mailbox Name Nameserver
    IANA
  •  
    CCSO Nameserver Protocol (Qi/Ph) (Official)
    WIKI
  • cso
    CCSO name server protocol
    Bekkoame
  • trojan
    [trojan] NerTe. Remote Access / Keylogger / Steals passwords. Works on Windows 95, 98, ME, NT and 2000. Aliases: Backdoor.NerTe, Backdoor.SG
    Simovits
Port: 105/UDP
105/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • csnet-ns
    Mailbox Name Nameserver
    IANA
  •  
    CCSO Nameserver Protocol (Qi/Ph) (Official)
    WIKI
  • cso
    CCSO name server protocol
    Bekkoame
Port: 136/TCP
136/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • profile
    PROFILE Naming System
    IANA
Port: 136/UDP
136/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • profile
    PROFILE Naming System
    IANA
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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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