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 "app"

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Port: 187/TCP
187/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • aci
    Application Communication Interface
    IANA
Port: 187/UDP
187/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • aci
    Application Communication Interface
    IANA
Port: 192/UDP
192/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • osu-nms
    OSU Network Monitoring System
    IANA
  • osu-nms
    OSU Network Monitoring System. AirPort Base Station PPP status or discovery (certain configurations), AirPort Admin Utility, AirPort Express Assistant
    Apple
Port: 201/TCP
201/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • at-rtmp
    AppleTalk Routing Maintenance
    IANA
  •  
    AppleTalk Routing Maintenance (Official)
    WIKI
  • trojan
    [trojan] One Windows Trojan. Remote Access. Works on Windows.
    Simovits
Port: 201/UDP
201/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • at-rtmp
    AppleTalk Routing Maintenance
    IANA
  •  
    AppleTalk Routing Maintenance (Official)
    WIKI
Port: 202/TCP
202/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • at-nbp
    AppleTalk Name Binding
    IANA
  • trojan
    [trojan] One Windows Trojan. Remote Access. Works on Windows.
    Simovits
  • trojan
    [trojan] Skun. Remote Access / Destructive trojan. Works on Windows. Aliases: Backdoor.Skun
    Simovits
Port: 202/UDP
202/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • at-nbp
    AppleTalk Name Binding
    IANA
Port: 203/TCP
203/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • at-3
    AppleTalk Unused
    IANA
Port: 203/UDP
203/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • at-3
    AppleTalk Unused
    IANA
Port: 204/TCP
204/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • at-echo
    AppleTalk Echo
    IANA
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About TCP/UDP ports

TCP port 187 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 187 in the same order in which they were sent. Guaranteed communication over TCP port 187 is the main difference between TCP and UDP. UDP port 187 would not have guaranteed communication as TCP.
UDP on port 187 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 187 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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