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 "pre"

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Port: 15/TCP
15/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  •  
    Unassigned [was netstat]
    IANA
  •  
    Previously netstat service (Unofficial)
    WIKI
  • netstat
    -
    SANS
  • b2
    [trojan] B2
    SANS
Port: 15/UDP
15/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  •  
    Unassigned
    IANA
  •  
    Previously netstat service (Unofficial)
    WIKI
Port: 123/TCP
123/TCP - Known port assignments (6 records found)
  • Service
    Details
    Source
  • ntp
    Network Time Protocol
    IANA
  • ntp
    Network Time Protocol (NTP). Date & Time preferences. Used for network time server synchronization, AppleTV Network Time Server Sync
    Apple
  • threat
    [threat] Madfind
    Bekkoame
  • threat
    [threat] Net Controller
    Bekkoame
  • netcontroller
    [trojan] Net Controller
    SANS
  • trojan
    [trojan] Net Controller. Remote Access / Keylogger / FTP server. Works on Windows 95, 98, ME, NT and XP. Both English and Portoguese versions exists. Aliases: Netcontroller
    Simovits
Port: 123/UDP
123/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • ntp
    Network Time Protocol
    IANA
  •  
    Network Time Protocol (NTP) - used for time synchronization (Official)
    WIKI
  • ntp
    Network Time Protocol (NTP). Date & Time preferences. Used for network time server synchronization, AppleTV Network Time Server Sync
    Apple
Port: 319/UDP
319/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • ptp-event
    PTP Event
    IANA
  •  
    Precision time protocol event messages (Official)
    WIKI
Port: 320/UDP
320/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • ptp-general
    PTP General
    IANA
  •  
    Precision time protocol general messages (Official)
    WIKI
Port: 677/TCP
677/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • vpp
    Virtual Presence Protocol
    IANA
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 677/UDP
677/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • vpp
    Virtual Presence Protocol
    IANA
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 1645/TCP
1645/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • sightline
    SightLine
    IANA
  •  
    radius auth, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers, but see port 1812 below) (Unofficial)
    WIKI
  • datametrics
    datametrics
    SANS
  • threat
    [threat] Remote Authentication Dial In User Service (RADIUS) RADIUS, or Remote Authentication Dial-In User service, is a freely available distributed security system developed by Lucent Technologies InterNetworking Systems. Lucent has worked with the Internet Engineering Task Force (IETF) to define RADIUS as an interoperable method for distributed security on the Internet. RADIUS was designed based on a previous recommendation from the IETF's Network Access Server Working Requirements Group.
    Bekkoame
Port: 1645/UDP
1645/UDP - Known port assignments (5 records found)
  • Service
    Details
    Source
  • sightline
    SightLine
    IANA
  •  
    radius auth, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers, but see port 1812 below) (Unofficial)
    WIKI
  • datametrics
    datametrics
    SANS
  • radius
    radius authentication
    SANS
  • threat
    [threat] Remote Authentication Dial In User Service (RADIUS) RADIUS, or Remote Authentication Dial-In User service, is a freely available distributed security system developed by Lucent Technologies InterNetworking Systems. Lucent has worked with the Internet Engineering Task Force (IETF) to define RADIUS as an interoperable method for distributed security on the Internet. RADIUS was designed based on a previous recommendation from the IETF's Network Access Server Working Requirements Group.
    Bekkoame
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About TCP/UDP ports

TCP port 15 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 15 in the same order in which they were sent. Guaranteed communication over TCP port 15 is the main difference between TCP and UDP. UDP port 15 would not have guaranteed communication as TCP.
UDP on port 15 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 15 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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