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 "k"

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Port: 500/TCP
500/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • isakmp
    isakmp
    IANA
  • isakmp
    VPN Key Exchange
    SANS
Port: 500/UDP
500/UDP - Known port assignments (5 records found)
  • Service
    Details
    Source
  • isakmp
    isakmp
    IANA
  •  
    Internet Security Association and Key Management Protocol (ISAKMP) (Official)
    WIKI
  • isakmp
    VPN Key Exchange
    SANS
  • isakmp
    ISAKMP/IKE. Mac OS X Server VPN service, Back to My Mac (MobileMe, Mac OS X v10.5 or later).
    Apple
  • threat
    [threat] Cisco Systems
    Bekkoame
Port: 543/TCP
543/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • klogin
    -
    IANA
  •  
    klogin, Kerberos login (Official)
    WIKI
Port: 543/UDP
543/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • klogin
    -
    IANA
Port: 544/TCP
544/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • kshell
    krcmd
    IANA
  •  
    kshell, Kerberos Remote shell (Official)
    WIKI
Port: 544/UDP
544/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • kshell
    krcmd
    IANA
Port: 545/TCP
545/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • appleqtcsrvr
    appleqtcsrvr
    IANA
  •  
    OSIsoft PI (VMS), OSISoft PI Server Client Access (Unofficial)
    WIKI
  • ekshell
    Kerberos encrypted remote shell NAME?
    SANS
Port: 555/TCP
555/TCP - Known port assignments (18 records found)
  • Service
    Details
    Source
  • dsf
    -
    IANA
  • threat
    [threat] 711 trojan (Seven Eleven)
    Bekkoame
  • threat
    [threat] Ini-Killer
    Bekkoame
  • threat
    [threat] Net Administrator
    Bekkoame
  • threat
    [threat] Phase Zero
    Bekkoame
  • threat
    [threat] Phase-0
    Bekkoame
  • threat
    [threat] Stealth Spy
    Bekkoame
  • threat
    [threat] Trojan: phAse Zero
    Bekkoame
  • 711trojan
    [trojan] 711 trojan (Seven Eleven)
    SANS
  • inikiller
    [trojan] Ini-Killer
    SANS
  • ini-killer
    [trojan] Ini-Killer
    SANS
  • netadministrator
    [trojan] Net Administrator
    SANS
  • phase-0
    [trojan] Phase-0
    SANS
  • phasezero
    [trojan] Phase Zero
    SANS
  • stealthspy
    [trojan] Stealth Spy
    SANS
  • trojan
    [trojan] 711 trojan (Seven Eleven). Anti-protection trojan / Remote Access / Keylogger / Steals passwords / Hacking tool / Destructive trojan. Works on Windows 95, 98 and ME. The source code is mainly based on the one of SoftWAR. Aliases: Seven Eleven, Seven1one
    Simovits
  • trojan
    [trojan] Phase Zero. Remote Access. Works on Windows 95, 98 and NT. Aliases: XD trojan, PhaseServer, Win32.Phase
    Simovits
  • trojan
    [trojan] Phase-0. Remote Access. Works on Windows 95, 98 and NT. Aliases: XD trojan, PhaseServer, Win32.Phase
    Simovits
Port: 584/TCP
584/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • keyserver
    Key Server
    IANA
  • keyserver
    -
    SANS
Port: 584/UDP
584/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • keyserver
    Key Server
    IANA
  • keyserver
    -
    SANS
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About TCP/UDP ports

TCP port 500 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 500 in the same order in which they were sent. Guaranteed communication over TCP port 500 is the main difference between TCP and UDP. UDP port 500 would not have guaranteed communication as TCP.
UDP on port 500 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 500 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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