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 "at"

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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: 40/TCP
40/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  •  
    Unassigned
    IANA
  • threat
    [threat] Midnight Commander Sometimes access FTP servers running at this port.
    Bekkoame
Port: 41/TCP
41/TCP - Known port assignments (8 records found)
  • Service
    Details
    Source
  • graphics
    -
    SANS
  • graphics
    Graphics
    IANA
  • threat
    [threat] RAT: Deep Throat Puts an FTP service at port 41 (TCP).
    Bekkoame
  • deepthroat
    [trojan] DeepThroat
    SANS
  • foreplay
    [trojan] Foreplay
    SANS
  • trojan
    [trojan] Deep Throat. Remote Access / FTP server / Steals passwords. Works on Windows 95, 98 and NT. There is a Global Master Password backdoor in all the servers: v 2.0 - whothefuckdoyouthinkiamgoddamnit2v 2.1 - whothefuckdoyouthinkiamgoddamnit1v 3.* - whothefuckdoyouthinkiamgoddamnit3 Aliases: Win32.DeepThroat, DTV2, DTV3, BackDoor.J, Backdoor.DeepThroat, W95/Backdoor.Tray
    Simovits
  • trojan
    [trojan] Foreplay. Remote Access / FTP server. Works on Windows. Aliases: F0replay, WiNNUke eXtreame, Reduced Foreplay
    Simovits
  • threat
    [threat] Foreplay
    Bekkoame
Port: 90/TCP
90/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • dnsix
    DNSIX Securit Attribute Token Map
    IANA
  •  
    dnsix (DoD Network Security for Information Exchange) Securit Attribute Token Map (Official)
    WIKI
  •  
    Pointcast (Unofficial)
    WIKI
Port: 90/UDP
90/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • dnsix
    DNSIX Securit Attribute Token Map
    IANA
  •  
    dnsix (DoD Network Security for Information Exchange) Securit Attribute Token Map (Official)
    WIKI
  •  
    Pointcast (Unofficial)
    WIKI
Port: 121/TCP
121/TCP - Known port assignments (10 records found)
  • Service
    Details
    Source
  • erpc
    Encore Expedited Remote Pro.Call
    IANA
  • threat
    [threat] Attack Bot
    Bekkoame
  • threat
    [threat] God Message
    Bekkoame
  • threat
    [threat] JammerKillah
    Bekkoame
  • attackbot
    [trojan] Attack Bot
    SANS
  • godmessage
    [trojan] God Message
    SANS
  • jammerkillah
    [trojan] JammerKillah
    SANS
  • trojan
    [trojan] Attack Bot. Works on Windows 95, 98 and ME.
    Simovits
  • trojan
    [trojan] God Message. Virus / Remote Access / ActiveX trojan / Downloading trojan / Worm / Mail trojan / IRC trojan / Network trojan. Works on Windows 95, 98, ME, NT and 2000, together with MS Internet Explorer 5, MS Outlook and mIRC. Aliases: BackDoor.AB.gen (?), JS.Trojan.WindowBomb
    Simovits
  • trojan
    [trojan] JammerKillah. Anti-protection trojan / Remote Access / Hacking tool / Trojan dropper. Works on Windows 95, 98 and ME.
    Simovits
Port: 170/TCP
170/TCP - Known port assignments (6 records found)
  • Service
    Details
    Source
  • print-srv
    Network PostScript
    IANA
  •  
    Print-srv, Network PostScript (Official)
    WIKI
  • threat
    [threat] A-trojan
    Bekkoame
  • atrojan
    [trojan] A-trojan
    SANS
  • a-trojan
    [trojan] A-trojan
    SANS
  • trojan
    [trojan] A-trojan. Remote Access / Steals passwords. Works on Windows 95, 98 and 2000. Aliases: WinCrash.B, Joke_Flipped, Atrojan, Troj_Wincrash.B, Trojan.PSW.Atrojan
    Simovits
Port: 171/TCP
171/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • multiplex
    Network Innovations Multiplex
    IANA
  • trojan
    [trojan] A-trojan. Remote Access / Steals passwords. Works on Windows 95, 98 and 2000. Aliases: WinCrash.B, Joke_Flipped, Atrojan, Troj_Wincrash.B, Trojan.PSW.Atrojan
    Simovits
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
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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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