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 "nt"

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Port: 20/TCP
20/TCP - Known port assignments (6 records found)
  • Service
    Details
    Source
  • ftp-data
    File Transfer [Default Data]
    IANA
  •  
    FTP - data transfer (Official)
    WIKI
  • ftp-data
    File Transport Protocol (FTP).
    Apple
  • threat
    [threat] Randex
    Bekkoame
  • sennaspyftpserver
    [trojan] Senna Spy FTP server
    SANS
  • trojan
    [trojan] Amanda. Remote Access / Keylogger / Steals passwords / ICQ trojan. Works on Windows 95 and 98, together with ICQ. Amanda installs under Windows NT, but is not able to run. Aliases: Backdoor.Amanda
    Simovits
Port: 21/TCP
21/TCP - Known port assignments (46 records found)
  • Service
    Details
    Source
  • ftp
    FTP control.
    Apple
  •  
    FTP - control (command) (Official)
    WIKI
  • ftp
    File Transfer [Control]
    IANA
  • threat
    [threat] Cattivik FTP Server
    Bekkoame
  • threat
    [threat] CC Invader
    Bekkoame
  • threat
    [threat] Dark FTP
    Bekkoame
  • threat
    [threat] Doly Trojan
    Bekkoame
  • threat
    [threat] Fore
    Bekkoame
  • threat
    [threat] Invisible FTP
    Bekkoame
  • threat
    [threat] Juggernaut 42
    Bekkoame
  • threat
    [threat] Larva
    Bekkoame
  • threat
    [threat] MotIv FTP
    Bekkoame
  • threat
    [threat] Net Administrator
    Bekkoame
  • threat
    [threat] Ramen
    Bekkoame
  • threat
    [threat] Senna Spy FTP server
    Bekkoame
  • threat
    [threat] The Flu
    Bekkoame
  • threat
    [threat] Traitor 21
    Bekkoame
  • threat
    [threat] W32.Bobax
    Bekkoame
  • threat
    [threat] W32.Loxbot
    Bekkoame
  • threat
    [threat] W32.Mytob
    Bekkoame
  • threat
    [threat] WebEx
    Bekkoame
  • threat
    [threat] WinCrash
    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] Back Construction. Remote Access / FTP server. Works on Windows 95 and 98. Aliases: Nightmare.B, Backdoor.Nightmare.B
    Simovits
  • trojan
    [trojan] Blade Runner. Remote Access. Works on Windows 95 and 98. The Client.zip-file also includes 32 WAV-files and 6 BMP-files. Aliases: Backdoor.BladeRunner
    Simovits
  • trojan
    [trojan] BlueFire. Remote Access / FTP server / Telnet trojan. Works on Windows. Aliases: Backdoor.BlueFire
    Simovits
  • trojan
    [trojan] Bmail. Remote Access. Works on Windows. Aliases: BackDoor.ABH, Backdoor.FTP.Bmail
    Simovits
  • trojan
    [trojan] Cattivik FTP Server. FTP server. Works on Windows 95, 98 and ME. Aliases: Senza, Backdoor.Senza
    Simovits
  • trojan
    [trojan] CC Invader. Remote Access / FTP server. Works on Windows 95, 98 and ME. Aliases: Backdoor.CCInvader, Backdoor.SysReg, SysReg
    Simovits
  • trojan
    [trojan] Dark FTP. Anti-protection trojan / Remote Access / FTP server / IRC trojan / Hacking tool. Works on Windows 95, 98, ME and NT, together with an IRC software and any FTP software. Aliases: Backdoor.KE
    Simovits
  • trojan
    [trojan] Doly Trojan. Remote Access / Keylogger / IRC trojan. Works on Windows 95, 98 and NT. Please note that not all versions work on NT. Dhacker.exe is a Doly 1.6 password cracker and Vbrun60.exe is only needed if you want to run it (written in Visual Basic 6). Aliases: Backdoor.AZ, Backdoor.Doly
    Simovits
  • trojan
    [trojan] FreddyK. Anti-protection trojan / Remote Access / FTP server / Downloading trojan. Works on Windows 95, 98 and ME. Aliases: Freddy 2001, Backdoor.FreddyK, TrojanDropper.Win32.Joiner.w
    Simovits
  • trojan
    [trojan] Invisible FTP. Downloading trojan / FTP server. Works on Windows 95, 98, ME, NT and 2000. Uses any FTP client as client, such as Cute FTP and Ws_ftp. Aliases: Win FTP, Zemac FTP, Backdoor.InvisibleFTP
    Simovits
  • trojan
    [trojan] KWM. Remote Access / Keylogger / Steals passwords / Downloading trojan. Works on Windows. Aliases: Backdoor.KWM
    Simovits
  • trojan
    [trojan] MscanWorm.
    Simovits
  • trojan
    [trojan] NerTe. Remote Access / Keylogger / Steals passwords. Works on Windows 95, 98, ME, NT and 2000. Aliases: Backdoor.NerTe, Backdoor.SG
    Simovits
  • trojan
    [trojan] NokNok. Anti-protection trojan / Remote Access / Steals passwords / IRC trojan / Port scanner. Works on Windows 95, 98, ME and 2000. Does NOT work on Windows NT. Aliases: Backdoor.FA, Troj_BckNokNok
    Simovits
  • trojan
    [trojan] Pinochet. Remote Access / Keylogger. Works on Windows.
    Simovits
  • trojan
    [trojan] Ramen. Worm / HTML trojan / HTTP server / Hacking tool / Destructive trojan. Works on Unix (Linux). Linux Red Hat 6.x and early versions of 7.0. May also work on other Unix dialects such as FreeBSD and Linux SuSE, Mandrake and Cladera. The mail addresses used are [email protected] and [email protected] Aliases: Linux.Ramen, Worm.Ramen, Elf.Ramen
    Simovits
  • trojan
    [trojan] Reverse Trojan. Remote Access / Keylogger / IRC trojan / FTP server / LAN trojan. Works on Windows. Aliases: Backdoor.ReverseTrojan
    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] The Flu. FTP server. Works on Windows 95, 98 and ME. Any FTP client can be used. Aliases: Rux the Flu, Backdoor.TheFlu
    Simovits
  • trojan
    [trojan] WinCrash. Anti-protection trojan / Remote Access / Keylogger / Steals passwords / Network trojan / IP scanner. Works on Windows 95, 98, ME and NT. Aliases: BackDoor.M, Backdoor.Wincrash, W95/Backdoor.WinCrash
    Simovits
  • trojan
    [trojan] Voyager Alpha Force. Worm / Remote Access / Distributed DoS tool / SQL trojan / IRC trojan / Downloading trojan / FTP server. Works on Windows, together with MS SQL Server 6.5 and 7.0. Aliases: MS SQL worm, SQL worm, Cblade, W32.Cblade.Worm
    Simovits
  • threat
    [threat] Back Construction
    Bekkoame
  • threat
    [threat] Blade Runner
    Bekkoame
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: 25/TCP
25/TCP - Known port assignments (47 records found)
  • Service
    Details
    Source
  • smtp
    Simple Mail Transfer Protocol (SMTP). Mail (for sending email); MobileMe Mail (sending)
    Apple
  •  
    Simple Mail Transfer Protocol (SMTP) - used for e-mail routing between mail servers (Official)
    WIKI
  • smtp
    Simple Mail Transfer
    IANA
  • threat
    [threat] Bancos
    Bekkoame
  • threat
    [threat] Barok
    Bekkoame
  • threat
    [threat] Chimo
    Bekkoame
  • threat
    [threat] Email Password Sender - EPS
    Bekkoame
  • threat
    [threat] EPS II
    Bekkoame
  • threat
    [threat] Gip
    Bekkoame
  • threat
    [threat] Gris
    Bekkoame
  • threat
    [threat] Happy99
    Bekkoame
  • threat
    [threat] Hpteam mail
    Bekkoame
  • threat
    [threat] Hybris
    Bekkoame
  • threat
    [threat] I love you
    Bekkoame
  • threat
    [threat] Kuang2
    Bekkoame
  • threat
    [threat] Magic Horse
    Bekkoame
  • threat
    [threat] MBT (Mail Bombing Trojan)
    Bekkoame
  • threat
    [threat] Mitglieder
    Bekkoame
  • threat
    [threat] Moscow Email trojan
    Bekkoame
  • threat
    [threat] Naebi
    Bekkoame
  • threat
    [threat] NewApt worm
    Bekkoame
  • threat
    [threat] ProMail trojan
    Bekkoame
  • threat
    [threat] Rustock
    Bekkoame
  • threat
    [threat] Shtirlitz
    Bekkoame
  • threat
    [threat] Stealth
    Bekkoame
  • threat
    [threat] Tapiras
    Bekkoame
  • threat
    [threat] Terminator
    Bekkoame
  • threat
    [threat] W32.Beagle
    Bekkoame
  • threat
    [threat] W32.HLLP.Sality
    Bekkoame
  • threat
    [threat] WinPC
    Bekkoame
  • threat
    [threat] WinSpy
    Bekkoame
  • trojan
    [trojan] Antigen. Steals passwords. Works on Windows 95, 98, and NT. Aliases: Antigen.a, Trojan.win32.TrojansRussia, Trojan.PSW.Antigen.a
    Simovits
  • trojan
    [trojan] Barok. Steals passwords. Works on Windows 95, 98 and ME. Aliases: Barock, BarokPWSteal.Trojan, Win-Bugsfix.exe
    Simovits
  • trojan
    [trojan] BSE. Remote Access. Works on Windows 95, 98, ME, NT and 2000. Aliases: RAT, Backdoor.BSE
    Simovits
  • trojan
    [trojan] Email Password Sender. Steals passwords / ICQ trojan. Works on Windows 95, 98 and NT. NT compatibility added in v 1.63. From v 1.62 the trojan is called EPS II. Aliases: EPS, EPS II
    Simovits
  • trojan
    [trojan] Gip. Remote Access / Steals passwords / ICQ trojan. Works on Windows 95, 98, NT and 2000, and ICQ 2000. Aliases: PWSteal.WinUp, Trojan.PSW.Gip, MrNop, ICQPass, PriceDoc.Trojan
    Simovits
  • trojan
    [trojan] Laocoon. Remote Access. Works on Windows. Aliases: Backdoor.Laocoon
    Simovits
  • trojan
    [trojan] Magic Horse. Steals passwords. Works on Windows 95, 98 and NT. Aliases: Trojan.PSW.Stealth.d
    Simovits
  • trojan
    [trojan] MBT. Mailbomber. Works on Windows 95, 98 and NT. Aliases: Mailbomb.b, Mail Bombing Trojan
    Simovits
  • trojan
    [trojan] Moscow Email trojan. Mail trojan / Autodialer / ICQ trojan / Steals passwords / Destructive trojan. Works on Windows 95 and 98, together with ICQ 99a. Aliases: Platan, Asp, Win32/Platan.Trojan, Platan.G, IExpand Trojan, DUNpws.bz
    Simovits
  • trojan
    [trojan] Nimda. Virus / Worm / Mail trojan / Network trojan / Hacking tool. Works on Windows 95, 98, ME, NT, 2000 and XP, together with MS Internet Information Server (IIS), MS Internet Explorer 5.5 SP1, MS Outlook , MS Outlook Express and MS Word. Aliases: Concept Virus (CV) v.5, W32.Nimda, Minda, W32.Minda, I-Worm.Nimda, Code Rainbow , PE_Nimda.A, CV-5
    Simovits
  • trojan
    [trojan] Shtirlitz. Steals passwords. Works on Windows 95 and 98. Aliases: Justas, PWSteal.Justas, Mail Shtirlitz, Delf.G, Mazafaker
    Simovits
  • trojan
    [trojan] Stukach. Keylogger. Works on Windows, on 95, 98, ME, NT and 2000. Aliases: Rit, Trojan.PSW.Rit
    Simovits
  • trojan
    [trojan] Tapiras. Steals passwords. Works on Windows 95, 98 and NT. Aliases: DUNpws.f, Backdoor.Tapi, Tapi
    Simovits
  • trojan
    [trojan] WinPC. Steals passwords. Works on Windows 95 and 98. Aliases: DUNpws.s
    Simovits
  • threat
    [threat] Ajan
    Bekkoame
  • threat
    [threat] Antigen
    Bekkoame
Port: 27/TCP
27/TCP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • nsw-fe
    NSW User System FE
    IANA
  •  
    NSW User System FE (Official)
    WIKI
  • altavista-fw97
    AltaVista Firewall97
    SANS
  • trojan
    [trojan] Assasin. Anti-protection trojan / Remote Access / Keylogger / LAN trojan. Works on Windows 95, 98, ME, NT, 2000 and XP. Aliases: A.s.s.A'sin', Backdoor.Assasin, BackDoor.AGS
    Simovits
Port: 28/TCP
28/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  •  
    Unassigned
    IANA
  • altavista-fw97
    AltaVista Firewall97
    SANS
  • trojan
    [trojan] Amanda. Remote Access / Keylogger / Steals passwords / ICQ trojan. Works on Windows 95 and 98, together with ICQ. Amanda installs under Windows NT, but is not able to run. Aliases: Backdoor.Amanda
    Simovits
Port: 31/TCP
31/TCP - Known port assignments (8 records found)
  • Service
    Details
    Source
  • msg-auth
    MSG Authentication
    IANA
  • threat
    [threat] Agent 31, Hackers Paradise, Masters Paradise
    Bekkoame
  • agent31
    [trojan] Agent 31
    SANS
  • mastersparadise
    [trojan] Masters Paradise
    SANS
  • trojan
    [trojan] Agent 40421. Backdoor. Works on Windows Windows 95, 98 and ME. Opens port 40421 for Master's Paradise 8.5.
    Simovits
  • trojan
    [trojan] Masters Paradise. Remote Access. Works on Windows 95, 98 and NT. Aliases: Masters Paradise 98, Paradise Agent, Paradise trojan, Backdoor.MasterP
    Simovits
  • hackersparadise
    [trojan] Hackers Paradise
    SANS
  • trojan
    [trojan] Skun. Remote Access / Destructive trojan. Works on Windows. Aliases: Backdoor.Skun
    Simovits
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: 69/TCP
69/TCP - Known port assignments (10 records found)
  • Service
    Details
    Source
  • tftp
    Trivial File Transfer
    IANA
  • threat
    [threat] W32.Evala.Worm
    Bekkoame
  • threat
    [threat] W32.Mockbot
    Bekkoame
  • backgate
    [trojan] BackGate
    SANS
  • trojan
    [trojan] BackGate Kit. Remote Access / Rootkit / Steals passwords / Downloading trojan / FTP proxy / HTTP proxy / Telnet proxy / SOCKs proxy / Winsock proxy / FTP server. Works on Windows NT, together with MS Internet Information Server (IIS). Aliases: Backdoor.NTHack, NT Hack, Unicode Rootkit
    Simovits
  • trojan
    [trojan] Nimda. Virus / Worm / Mail trojan / Network trojan / Hacking tool. Works on Windows 95, 98, ME, NT, 2000 and XP, together with MS Internet Information Server (IIS), MS Internet Explorer 5.5 SP1, MS Outlook , MS Outlook Express and MS Word. Aliases: Concept Virus (CV) v.5, W32.Nimda, Minda, W32.Minda, I-Worm.Nimda, Code Rainbow , PE_Nimda.A, CV-5
    Simovits
  • trojan
    [trojan] Pasana. Remote Access. Works on Windows. Aliases: Backdoor.Pasana
    Simovits
  • trojan
    [trojan] Storm. Distributed DoS tool. Works on Windows 95, 98, ME, NT and 2000, together with MS Internet Information Services (IIS) 4.0 and 5.0. Aliases: Java-Storm
    Simovits
  • trojan
    [trojan] Storm worm. Worm / Distributed DoS tool / Mail trojan. Works with Windows, together with MS Internet Information Server (IIS) 4.0 and 5.0. Aliases: DoS.Storm.Worm, W32.Storm.Worm
    Simovits
  • trojan
    [trojan] Theef. Anti-protection trojan / Remote Access / Keylogger / Port proxy / FTP server / Remote peeker. Works on Windows 95, 98, ME, NT and XP. Aliases: Backdoor.Theef, BackDoor.QW, Bkdr_Delf.AX
    Simovits
Port: 79/TCP
79/TCP - Known port assignments (7 records found)
  • Service
    Details
    Source
  • finger
    -
    SANS
  •  
    Finger protocol (Official)
    WIKI
  • finger
    Finger
    IANA
  • finger
    Finger.
    Apple
  • trojan
    [trojan] Firehotcker. Remote Access. Works on Windows 95, 98 and NT. Aliases: FH backdoor, Firehotcker Network Error, FNE, Backdoor.FireHotcker
    Simovits
  • threat
    [threat] RAT:Firehotcker Requires VB CDK
    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
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About TCP/UDP ports

TCP port 20 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 20 in the same order in which they were sent. Guaranteed communication over TCP port 20 is the main difference between TCP and UDP. UDP port 20 would not have guaranteed communication as TCP.
UDP on port 20 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 20 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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