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 "alt"

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Port: 26/TCP
26/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  •  
    Unassigned
    IANA
  • altavista-fw97
    AltaVista Firewall97
    SANS
  • threat
    [threat] W32.Netsky
    Bekkoame
Port: 27/TCP
27/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • nsw-fe
    NSW User System FE
    IANA
  •  
    NSW User System FE (Official)
    WIKI
  • altavista-fw97
    AltaVista Firewall97
    SANS
  • trojan
    [trojan] Assasin. Anti-protection trojan / Remote Access / Keylogger / LAN trojan. Works on Windows 95, 98, ME, NT, 2000 and XP. Aliases: A.s.s.A'sin', Backdoor.Assasin, BackDoor.AGS
    Simovits
Port: 28/TCP
28/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  •  
    Unassigned
    IANA
  • altavista-fw97
    AltaVista Firewall97
    SANS
  • trojan
    [trojan] Amanda. Remote Access / Keylogger / Steals passwords / ICQ trojan. Works on Windows 95 and 98, together with ICQ. Amanda installs under Windows NT, but is not able to run. Aliases: Backdoor.Amanda
    Simovits
Port: 29/TCP
29/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • msg-icp
    MSG ICP
    IANA
  •  
    MSG ICP (Official)
    WIKI
  • altavista-fw97
    AltaVista Firewall97
    SANS
Port: 591/UDP
591/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • http-alt
    FileMaker, Inc. - HTTP Alternate (see Port 80)
    IANA
  • http-alt
    FileMaker Inc. - HTTP Alternate (see Port 80)
    SANS
Port: 591/TCP
591/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • http-alt
    FileMaker, Inc. - HTTP Alternate (see Port 80)
    IANA
  •  
    FileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80) (Official)
    WIKI
  • http-alt
    FileMaker Inc. - HTTP Alternate (see Port 80)
    SANS
Port: 904/TCP
904/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  •  
    VMware Server Alternate (if 902 is in use, i.e. SUSE linux) (Unofficial)
    WIKI
  •  
    Unassigned
    IANA
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 1309/TCP
1309/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • jtag-server
    JTAG server
    IANA
  •  
    Altera Quartus jtagd (Official)
    WIKI
  • threat
    [threat] Jittar
    Bekkoame
Port: 1346/TCP
1346/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • alta-ana-lm
    Alta Analytics License Manager
    IANA
Port: 1346/UDP
1346/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • alta-ana-lm
    Alta Analytics License Manager
    IANA
  • ghost-client
    Symantec Ghost multicast (client)
    SANS
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About TCP/UDP ports

TCP port 26 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 26 in the same order in which they were sent. Guaranteed communication over TCP port 26 is the main difference between TCP and UDP. UDP port 26 would not have guaranteed communication as TCP.
UDP on port 26 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 26 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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