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 "communication"

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Port: 23/TCP
23/TCP - Known port assignments (20 records found)
  • Service
    Details
    Source
  •  
    Telnet protocol - unencrypted text communications (Official)
    WIKI
  • telnet
    -
    SANS
  • telnet
    Telnet.
    Apple
  • telnet
    Telnet
    IANA
  • threat
    [threat] Tiny Telnet Server - TTS
    Bekkoame
  • threat
    [threat] Truva Atl
    Bekkoame
  • telnet
    [threat] Telnet
    Bekkoame
  • trojan
    [trojan] ADM worm. Worm / Rootkit / Backdoor. Works on Unix (Linux). Affects Linux RedHat 4.0 to 5.2. Aliases: ADM Inet w0rm, Linux.ADM.Worm
    Simovits
  • trojan
    [trojan] Aphex's Remote Packet Sniffer. Remote Access / Network sniffer. Works on Windows. Aliases: Asniffer
    Simovits
  • trojan
    [trojan] AutoSpY. Anti-protection trojan / Remote Access / Worm / Network trojan / DoS tool / Telnet server / Virus dropper / Prank trojan. Works on Windows 95 and 98, together with MS Outlook. At least on version 1.2 Apocalipse, Telnet can be used as client. Aliases: AntiSpy, Backdoor.AntiSpy, Backdoor.AutoSpy
    Simovits
  • trojan
    [trojan] ButtMan. Remote Access. Works on Windows 95, 98 and NT. Aliases: BM, Backdoor.Buttman, Backdoor.Tubma, Backdoor.BR, Tubma
    Simovits
  • trojan
    [trojan] Fire HacKer. Remote Access. Works on Windows. Aliases: Backdoor.FireHacker
    Simovits
  • trojan
    [trojan] My Very Own trojan. Remote Access / FTP server. Works on Windows 95, 98 and ME. Telnet is used as client.
    Simovits
  • trojan
    [trojan] Pest. Remote Access / Keylogger / Steals passwords / Remote peeker / MSN trojan / Port scanner / Destructive trojan. Works on Windows 95, 98, ME, NT, 2000 and XP, together with MS MSN Messenger. the first version(s) did NOT work on Windows 2000. Aliases: Pestdoor, Backdoor.Pestdoor, Antilam, Backdoor.Antilam.g1, Juntador, TrojanDropper.Win32.Juntador.c
    Simovits
  • trojan
    [trojan] RTB 666. Remote Access / FTP server / IP scanner. Works on Windows, together with MS Internet Explorer. Aliases: Backdoor.RTB
    Simovits
  • trojan
    [trojan] Tiny Telnet Server - TTS. Remote Access. Works on Windows. Telnet server.
    Simovits
  • trojan
    [trojan] Truva Atl. Anti-protection trojan / Remote Access. Works on Windows 95 and 98. Aliases: Komut, Backdoor.Komut, Warhome, BKDR_Warhome
    Simovits
  • threat
    [threat] Dagonit
    Bekkoame
  • threat
    [threat] Fire HacKer
    Bekkoame
  • threat
    [threat] MindControl
    Bekkoame
Port: 64/TCP
64/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • covia
    Communications Integrator (CI)
    IANA
Port: 64/UDP
64/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • covia
    Communications Integrator (CI)
    IANA
Port: 104/TCP
104/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • acr-nema
    ACR-NEMA Digital Imag. &Comm. 300
    IANA
  •  
    ACR/NEMA Digital Imaging and Communications in Medicine (Official)
    WIKI
  • acr-nema
    ACR-NEMA Digital Imag. & Comm. 300
    SANS
Port: 104/UDP
104/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • acr-nema
    ACR-NEMA Digital Imag. &Comm. 300
    IANA
  •  
    ACR/NEMA Digital Imaging and Communications in Medicine (Official)
    WIKI
  • acr-nema
    ACR-NEMA Digital Imag. & Comm. 300
    SANS
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: 286/TCP
286/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • fxp
    FXP Communication
    IANA
  • fxp-1
    FXP-1
    SANS
Port: 286/UDP
286/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • fxp
    FXP Communication
    IANA
  • fxp-1
    FXP-1
    SANS
Port: 700/TCP
700/TCP - Known port assignments (5 records found)
  • Service
    Details
    Source
  • epp
    Extensible Provisioning Protocol
    IANA
  •  
    EPP (Extensible Provisioning Protocol), a protocol for communication between domain name registries and registrars (RFC 5734) (Official)
    WIKI
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
  • buddyphone
    [threat] This Internet telephony product communicates over this port as well as the TCP range 5000-5111.
    Bekkoame
  • trojan
    [trojan] REx. Remote Access, works on Windows.
    Simovits
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About TCP/UDP ports

TCP port 23 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 23 in the same order in which they were sent. Guaranteed communication over TCP port 23 is the main difference between TCP and UDP. UDP port 23 would not have guaranteed communication as TCP.
UDP on port 23 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 23 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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