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 "official"

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Port: 56/TCP
56/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • xns-auth
    XNS Authentication
    IANA
  •  
    Route Access Protocol (RAP) (Unofficial)
    WIKI
  •  
    XNS (Xerox Network Systems) Authentication (Official)
    WIKI
Port: 56/UDP
56/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • xns-auth
    XNS Authentication
    IANA
  •  
    Route Access Protocol (RAP) (Unofficial)
    WIKI
  •  
    XNS (Xerox Network Systems) Authentication (Official)
    WIKI
Port: 57/TCP
57/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  •  
    any private terminal access
    IANA
  •  
    Mail Transfer Protocol (RFC 780) (Official)
    WIKI
  • priv-term
    any private terminal access
    SANS
  • fxscanner
    FX-Tools Vulnerability Scanner
    SANS
Port: 58/TCP
58/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • xns-mail
    XNS Mail
    IANA
  •  
    XNS (Xerox Network Systems) Mail (Official)
    WIKI
  • threat
    [threat] DMSetup
    Bekkoame
  • dmsetup
    [trojan] DMSetup
    SANS
Port: 58/UDP
58/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • xns-mail
    XNS Mail
    IANA
  •  
    XNS (Xerox Network Systems) Mail (Official)
    WIKI
Port: 67/UDP
67/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • bootps
    Bootstrap Protocol Server
    IANA
  •  
    Bootstrap Protocol (BOOTP) Server; also used by Dynamic Host Configuration Protocol (DHCP) (Official)
    WIKI
  • bootps
    Bootstrap Protocol Server (BootP, bootps). NetBoot via DHCP
    Apple
Port: 68/UDP
68/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • bootpc
    Bootstrap Protocol Client
    IANA
  •  
    Bootstrap Protocol (BOOTP) Client; also used by Dynamic Host Configuration Protocol (DHCP) (Official)
    WIKI
  • bootpc
    Bootstrap Protocol Client (bootpc). NetBoot via DHCP
    Apple
Port: 69/UDP
69/UDP - Known port assignments (8 records found)
  • Service
    Details
    Source
  •  
    Trivial File Transfer Protocol (TFTP) (Official)
    WIKI
  • tftp
    Trivial File Transfer Protocol (TFTP).
    Apple
  • tftp
    Trivial File Transfer
    IANA
  • threat
    [threat] W32.Cycle
    Bekkoame
  • threat
    [threat] W32.Zotob
    Bekkoame
  • trojan
    [trojan] Pasana. Remote Access. Works on Windows. Aliases: Backdoor.Pasana
    Simovits
  • threat
    [threat] W32.Blaster.Worm
    Bekkoame
  • threat
    [threat] W32.Bolgi.Worm
    Bekkoame
Port: 70/TCP
70/TCP - Known port assignments (5 records found)
  • Service
    Details
    Source
  • gopher
    Gopher
    IANA
  •  
    Gopher protocol (Official)
    WIKI
  • gopher
    -
    SANS
  • threat
    [threat] W32.Evala.Worm
    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
Port: 71/TCP
71/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • netrjs-1
    Remote Job Service
    IANA
  •  
    NETRJS protocol (Official)
    WIKI
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About TCP/UDP ports

TCP port 56 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 56 in the same order in which they were sent. Guaranteed communication over TCP port 56 is the main difference between TCP and UDP. UDP port 56 would not have guaranteed communication as TCP.
UDP on port 56 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 56 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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