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 "block"

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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: 445/TCP
445/TCP - Known port assignments (38 records found)
  • Service
    Details
    Source
  •  
    Microsoft-DS Active Directory, Windows shares (Official)
    WIKI
  •  
    Microsoft-DS SMB file sharing (Official)
    WIKI
  • microsoft-ds
    Win2k+ Server Message Block
    SANS
  • microsoft-ds
    Microsoft SMB Domain Server.
    Apple
  • microsoft-ds
    Microsoft-DS
    IANA
  • threat
    [threat] W32.Aizu
    Bekkoame
  • threat
    [threat] W32.Bobax
    Bekkoame
  • threat
    [threat] W32.Bolgi.Worm
    Bekkoame
  • threat
    [threat] W32.Cissi
    Bekkoame
  • threat
    [threat] W32.Cycle
    Bekkoame
  • threat
    [threat] W32.Explet
    Bekkoame
  • threat
    [threat] W32.HLLW.Deborms
    Bekkoame
  • threat
    [threat] W32.HLLW.Deloder
    Bekkoame
  • threat
    [threat] W32.HLLW.Gaobot
    Bekkoame
  • threat
    [threat] W32.HLLW.Lioten
    Bekkoame
  • threat
    [threat] W32.HLLW.Moega
    Bekkoame
  • threat
    [threat] W32.HLLW.Nebiwo
    Bekkoame
  • threat
    [threat] W32.HLLW.Polybot
    Bekkoame
  • threat
    [threat] W32.Ifbo
    Bekkoame
  • threat
    [threat] W32.Janx
    Bekkoame
  • threat
    [threat] W32.Kibuv.Worm
    Bekkoame
  • threat
    [threat] W32.Kiman
    Bekkoame
  • threat
    [threat] W32.Korgo
    Bekkoame
  • threat
    [threat] W32.Mytob
    Bekkoame
  • threat
    [threat] W32.Reatle
    Bekkoame
  • threat
    [threat] W32.Sasser
    Bekkoame
  • threat
    [threat] W32.Scane
    Bekkoame
  • threat
    [threat] W32.Slackor
    Bekkoame
  • threat
    [threat] W32.Spybot
    Bekkoame
  • threat
    [threat] W32.Wallz
    Bekkoame
  • threat
    [threat] W32.Welchia
    Bekkoame
  • threat
    [threat] W32.Yaha, Randex
    Bekkoame
  • threat
    [threat] W32.Zotob
    Bekkoame
  • 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
  • threat
    [threat] Netdepix
    Bekkoame
  • threat
    [threat] Otinet
    Bekkoame
  • threat
    [threat] Rtkit
    Bekkoame
  • threat
    [threat] Secefa
    Bekkoame
Port: 445/UDP
445/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • microsoft-ds
    Microsoft-DS
    IANA
  • microsoft-ds
    Win2k+ Server Message Block
    SANS
Port: 702/TCP
702/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • iris-beep
    IRIS over BEEP
    IANA
  •  
    IRIS (Internet Registry Information Service) over BEEP (Blocks Extensible Exchange Protocol) (RFC 3983) (Official)
    WIKI
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 2073/TCP
2073/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • gxs-data-port
    DataReel Database Socket
    IANA
  • vbs-data-port
    Variable Block Socket
    SANS
Port: 2073/UDP
2073/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • gxs-data-port
    DataReel Database Socket
    IANA
  • vbs-data-port
    Variable Block Socket
    SANS
Port: 2564/TCP
2564/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • hp-3000-telnet
    HP 3000 NS/VT block mode telnet
    IANA
  • hp-3000-telnet
    HP 3000 NS VT block mode telnet
    SANS
Port: 2574/UDP
2574/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • blockade-bpsp
    Blockade BPSP
    IANA
Port: 2574/TCP
2574/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • blockade-bpsp
    Blockade BPSP
    IANA
Port: 2911/UDP
2911/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • blockade
    Blockade
    IANA
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About TCP/UDP ports

TCP port 139 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 139 in the same order in which they were sent. Guaranteed communication over TCP port 139 is the main difference between TCP and UDP. UDP port 139 would not have guaranteed communication as TCP.
UDP on port 139 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 139 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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