TCP/UDP Port Finder

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Database updated - March 30, 2016

Search results for "139"

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: 139/UDP
139/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • netbios-ssn
    NETBIOS Session Service
    IANA
  •  
    NetBIOS NetBIOS Session Service (Official)
    WIKI
  • threat
    [threat] W32.Spybot
    Bekkoame

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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