Port is in use - Alpha Software
NetBIOS over TCP/IP (also called NBT) seems to slowly supersede all the other NetBIOS variants. NBT provides three services: NetBIOS Name Service: /NBNS on UDP (or TCP) port 137 (similar to DNS and also known as WINS on Windows) NetBIOS Datagram Service: /NBDS on UDP port 138, rarely used . NetBIOS Session Service: /NBSS on TCP port 139 . History List of TCP/UDP port mnemonics - Cisco Community I am talking about those used in access lists, like "www" for port 80 and "smtp" for port 25, e.g. access-list XXX extended permit udp host 1.1.1.1 host 1.1.1.2 eq domain. I have never seen one anywhere. I just ran across an ACE with the mnemonics file-tcp and file-udp. How do I resolve those to numeric port numbers? The dangers of open port 139 - SearchSecurity I recently discovered I have an open port: 139. I did some research and found out it is a Netbios-ssn port used for sharing files. I have scanned for relevant Trojans and found none. Comprehensive List of Ports Used by Lexmark Port Number: Type: Function: 135: TCP/UDP: Used to remotely manage services including DHCP server, DNS server and WINS. 137: TCP/UDP: NetBIOS Name Service Port: 139: TCP/UDP: Netbios ds (NetBIOS Session Service) 443: TCP/UDP: Establishes a HTTPS connection: 445: TCP: Microsoft-DS Active Directory, Windows shares
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Solved: How to check open ports in DataDomain - Dell Community Not shown: 990 closed ports. PORT STATE SERVICE. 21/tcp open ftp. 22/tcp open ssh. 80/tcp open http. 111/tcp open rpcbind. 139/tcp open netbios-ssn. 161/tcp open snmp. 443/tcp open https. 445/tcp open microsoft-ds. 2049/tcp open nfs. 8009/tcp open ajp13. MAC Address: XX:XX:XX:XX:XX:XX(Unknown) Regards. Michael CVE-2017-0174 : Windows NetBIOS in Windows Server 2008 SP2 CVE-2017-0174 : Windows NetBIOS in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows a denial of service vulnerability when it improperly handles NetBIOS packets, aka "Windows NetBIOS Denial of Service Vulnerability".
Port 139. Name: netbios-ssn. Purpose: NETBIOS Session Service. Description: TCP NetBIOS connections are made over this port, usually with Windows machines but also with any other system running Samba (SMB). These TCP connections form "NetBIOS sessions" to support connection oriented file sharing activities. Related Ports:
RFC 1002 - Protocol standard for a NetBIOS service on a - SSN_RETRY_COUNT - The maximum number TCP connection attempts allowable per a single NetBIOS call request. - SSN_CLOSE_TIMEOUT is the time period to wait when closing the NetBIOS session before killing the TCP connection if session sends are outstanding. The following are Defined Constants for the NetBIOS Session Service.