TCP/UDP Port Finder

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Database updated - March 30, 2016

Search results for "4000"

Port: 4000/TCP
4000/TCP - Known port assignments (7 records found)
  • Service
    Details
    Source
  • terabase
    Terabase
    IANA
  •  
    Diablo II game (Unofficial)
    WIKI
  • threat
    [threat] SkyDance
    Bekkoame
  • connect-backbackdoor
    [trojan] Connect-Back Backdoor
    SANS
  • skydance
    [trojan] SkyDance
    SANS
  • trojan
    [trojan] Remote Anything. Remote Access. Works on Windows 95, 98, ME, NT, 2000 and XP. This is a commercial software and sold for 49$ for one licens! Aliases: RA, Backdoor.RA, Remote-Anything
    Simovits
  • trojan
    [trojan] SkyDance. Remote Access / Distributed DoS tool / Steals passwords. Works on Windows 95, 98, ME, NT and 2000. Aliases: SKD, BackDoor.EX
    Simovits
Port: 4000/UDP
4000/UDP - Known port assignments (5 records found)
  • Service
    Details
    Source
  • terabase
    Terabase
    IANA
  •  
    Diablo II game (Official)
    WIKI
  • threat
    [threat] Command and Conquer (UDP) The game "Command and Conquer" by Weswood Studios uses this UDP port. Also uses UDP port 5400.
    Bekkoame
  • threat
    [threat] ICQ uses this as a control port.
    Bekkoame
  • threat
    [threat] W32.Witty
    Bekkoame

About TCP/UDP ports

TCP port 4000 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 4000 in the same order in which they were sent. Guaranteed communication over TCP port 4000 is the main difference between TCP and UDP. UDP port 4000 would not have guaranteed communication as TCP.
UDP on port 4000 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 4000 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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