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 "used"

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Port: 113/TCP
113/TCP - Known port assignments (20 records found)
  • Service
    Details
    Source
  • auth
    Authentication Service
    IANA
  •  
    ident - Authentication Service/Identification Protocol, used by IRC servers to identify users (Official)
    WIKI
  • ident
    -
    Bekkoame
  • auth
    ident tap Authentication Service
    SANS
  • ident
    Identification Protocol.
    Apple
  • threat
    [threat] W32.Bofra
    Bekkoame
  • threat
    [threat] W32.Korgo
    Bekkoame
  • threat
    [threat] W32.Linkbot
    Bekkoame
  • threat
    [threat] W32.Mydoom
    Bekkoame
  • threat
    [threat] W32.Spybot
    Bekkoame
  • trojan
    [trojan] Dosh. Remote Access. Works on Windows. Aliases: Backdoor.Dosh
    Simovits
  • trojan
    [trojan] Gibbon. Works on Windows. Aliases: Backdoor.Gibbon, Ders, Backdoor.Ders, Delf.E, War Gibbon
    Simovits
  • trojan
    [trojan] Taskman. Remote Access / IRC trojan / DoS tool. Works on Windows 95, 98 and NT, together with an IRC software. Aliases: Trojan.PSW.Taskman, Task Manager, Tasm, Backdoor.Tasmer, Narnar, W32.Tasmer.A, IRC/Randy, Randy, Tasmer
    Simovits
  • 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] Alicia. Remote Access / IRC trojan. Works on Windows. Aliases: Backdoor.Alicia
    Simovits
  • trojan
    [trojan] Cyn. Remote Access / Downloading trojan / Port scanner. Works on Windows. Aliases: Backdoor.Cyn, Backdoor.PB
    Simovits
  • trojan
    [trojan] DataSpy Network X. Remote Access / Keylogger / Downloading trojan / Port scanner / DoS tool / IRC trojan / Port proxy / Hacking tool / Destructive trojan. Works on Windows. Aliases: DSNX, Win32.DSNX, Backdoor.DSNX, BackDoor.UK, Trojan.Win32.DSNX, Troj/Dsnx
    Simovits
  • threat
    [threat] Invisible Identd Deamon
    Bekkoame
  • threat
    [threat] Kazimas
    Bekkoame
  • threat
    [threat] Randex
    Bekkoame
Port: 119/TCP
119/TCP - Known port assignments (5 records found)
  • Service
    Details
    Source
  • nntp
    Network News Transfer Protocol
    IANA
  •  
    Network News Transfer Protocol (NNTP) - retrieval of newsgroup messages (Official)
    WIKI
  • nntp
    Network News Transfer Protocol (NNTP). Used by applications that read newsgroups.
    Apple
  • threat
    [threat] Happy99
    Bekkoame
  • threat
    [threat] Horrortel
    Bekkoame
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: 135/TCP
135/TCP - Known port assignments (22 records found)
  • Service
    Details
    Source
  •  
    DCE endpoint resolution (Official)
    WIKI
  • epmap
    DCE endpoint resolution
    IANA
  •  
    Microsoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service, used to remotely manage services including DHCP server, DNS server and WINS. Also used by DCOM (Unofficial)
    WIKI
  • loc-srv
    NCS local location broker
    SANS
  • threat
    [threat] Secefa
    Bekkoame
  • threat
    [threat] W32.Kiman
    Bekkoame
  • threat
    [threat] Femot
    Bekkoame
  • threat
    [threat] W32.Blaster.Worm
    Bekkoame
  • threat
    [threat] W32.Francette.Worm
    Bekkoame
  • threat
    [threat] W32.Explet
    Bekkoame
  • threat
    [threat] W32.Kibuv.Worm
    Bekkoame
  • threat
    [threat] W32.Lovgate
    Bekkoame
  • threat
    [threat] W32.Maslan
    Bekkoame
  • threat
    [threat] W32.Mytob
    Bekkoame
  • threat
    [threat] W32.Reatle
    Bekkoame
  • threat
    [threat] W32.Spybot
    Bekkoame
  • threat
    [threat] W32.Welchia
    Bekkoame
  • threat
    [threat] W32.Yaha
    Bekkoame
  • threat
    [threat] W32.Cissi
    Bekkoame
  • threat
    [threat] W32.HLLW.Gaobot
    Bekkoame
  • threat
    [threat] W32.HLLW.Polybot
    Bekkoame
  • threat
    [threat] W32.Kassbot
    Bekkoame
Port: 135/UDP
135/UDP - Known port assignments (20 records found)
  • Service
    Details
    Source
  • epmap
    DCE endpoint resolution
    IANA
  •  
    Microsoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service, used to remotely manage services including DHCP server, DNS server and WINS. Also used by DCOM (Unofficial)
    WIKI
  •  
    DCE endpoint resolution (Official)
    WIKI
  • loc-srv
    Location Service
    SANS
  • threat
    [threat] W32.Blaster.Worm
    Bekkoame
  • threat
    [threat] W32.Cissi
    Bekkoame
  • threat
    [threat] W32.Explet
    Bekkoame
  • threat
    [threat] W32.Francette.Worm
    Bekkoame
  • threat
    [threat] W32.HLLW.Gaobot
    Bekkoame
  • threat
    [threat] W32.HLLW.Polybot
    Bekkoame
  • threat
    [threat] W32.Kassbot
    Bekkoame
  • threat
    [threat] W32.Kibuv.Worm
    Bekkoame
  • threat
    [threat] W32.Lovgate
    Bekkoame
  • threat
    [threat] W32.Maslan
    Bekkoame
  • threat
    [threat] W32.Mytob
    Bekkoame
  • threat
    [threat] W32.Reatle
    Bekkoame
  • threat
    [threat] W32.Spybot
    Bekkoame
  • threat
    [threat] W32.Welchia
    Bekkoame
  • threat
    [threat] W32.Yaha
    Bekkoame
  • threat
    [threat] Femot
    Bekkoame
Port: 139/TCP
139/TCP - Known port assignments (23 records found)
  • Service
    Details
    Source
  • netbios-ssn
    Server Message Block (SMB). Used by Microsoft Windows file and print services, such as Windows Sharing in Mac OS X.
    Apple
  •  
    NetBIOS NetBIOS Session Service (Official)
    WIKI
  • netbios-ssn
    NETBIOS Session Service
    IANA
  • threat
    [threat] Netlog
    Bekkoame
  • threat
    [threat] Network
    Bekkoame
  • threat
    [threat] Qaz
    Bekkoame
  • threat
    [threat] W32.Cissi
    Bekkoame
  • threat
    [threat] W32.HLLW.Deborms
    Bekkoame
  • threat
    [threat] W32.HLLW.Moega
    Bekkoame
  • threat
    [threat] W32.Kiman
    Bekkoame
  • threat
    [threat] W32.Licum
    Bekkoame
  • threat
    [threat] W32.Reidana
    Bekkoame
  • threat
    [threat] W32.Spybot
    Bekkoame
  • threat
    [threat] W32.Yaha
    Bekkoame
  • threat
    [threat] Chode
    Bekkoame
  • trojan
    [trojan] Chode. Worm / Network trojan / Autodialing trojan / Destructive trojan. Works on Windows 3.x, 95 and 98 (maybe also on NT). Aliases: BAT/911-A, BAT/911-B, BAT.Chode.Worm, W95/Firkin.worm, Foreskin, BAT911, 911, DickHair, Bat/Firkin.A, Bat/Firkin.B, Firkin, Chode 911
    Simovits
  • trojan
    [trojan] Fire HacKer. Remote Access. Works on Windows. Aliases: Backdoor.FireHacker
    Simovits
  • trojan
    [trojan] Msinit. Worm / Destructive trojan / Network trojan. Works on Windows 95, 98 and ME. Aliases: Troj_Msinet.A, MSINIT.A, W32/Msinit, Win32.Trojan.Bymer, W32.HLLW.Bymer, Dnet.Dropper, Trojan.Win32.Bymer, W32/Bymer-A, Worm_Bymer_a, Wininit, Worm.RC5, Worm/Dnet_Winit
    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] Opaserv. Worm / Network trojan. Works on Windows 95, 98, ME, NT, 2000 and XP. Aliases: Scrup, W32.Opaserv.Worm, Opasoft, Backdoor.Opasoft, Backdoor.ALB
    Simovits
  • trojan
    [trojan] Qaz. Remote Access / Downloading trojan / Worm / Network trojan. Works on Windows 95, 98, ME, NT and 2000. Aliases: Worm.Qaz, W32.HLLW.Qaz, Notepad, W32/QAZ.worm, Note.com, Qazwsx, W95/Qaz
    Simovits
  • threat
    [threat] God Message worm
    Bekkoame
  • threat
    [threat] Msinit
    Bekkoame
Port: 200/TCP
200/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • src
    IBM System Resource Controller
    IANA
  • trojan
    [trojan] CyberSpy. Anti-protection trojan / Remote Access / Keylogger / Steals passwords. Works on Windows. Telnet and poTTY can be used as client. Aliases: CS, Backdoor.CyberSpy
    Simovits
Port: 389/TCP
389/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • ldap
    Lightweight Directory Access Protocol
    IANA
  •  
    Lightweight Directory Access Protocol (LDAP) (Official)
    WIKI
  • ldap
    Lightweight Directory Access Protocol (LDAP). Used by applications that look up addresses, such as Mail and Address Book.
    Apple
Port: 512/UDP
512/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • biff
    used by mail system to notify users of new mail received; currently receives messages only from processes on the same machine
    IANA
  •  
    comsat, together with biff (Official)
    WIKI
  • biff
    comsat
    SANS
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About TCP/UDP ports

TCP port 113 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 113 in the same order in which they were sent. Guaranteed communication over TCP port 113 is the main difference between TCP and UDP. UDP port 113 would not have guaranteed communication as TCP.
UDP on port 113 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 113 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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