TCP port 139 is SMB over NETBIOS. NETBIOS is a transport layer protocol designed to use in Windows operating systems over the network. TCP 445 is SMB over IP. This is a newer version where SMB can be consumed normally over the IP networks.
Ports 139 & 445 are Windows ports. Port 139 NetBIOS. NetBIOS Session (TCP), Windows File and Printer Sharing . This is one of the most dangerous port on the Internet. All "File and Printer Sharing" on a Windows machine runs over this port. About 10% of all users on the Internet leave their hard disks exposed on this port. Port 445 SMB Apr 11, 2019 · Ports 135, 139, 445 I feel these settings are not correct or SAFE in my Windows Firewall. I just recently took my laptop in to computer repair tech. due to our computer acting funky, thinking we may have a virus or been hijacked again. TCP port 139 uses the Transmission Control Protocol. TCP is one of the main protocols in TCP/IP networks. 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. The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the well Port 139 Background and Additional Information: This is the third port of the original "NetBIOS trio" used by the first Windows operating systems (up through Windows NT) in support of file sharing. TCP port 139 is SMB over NETBIOS. NETBIOS is a transport layer protocol designed to use in Windows operating systems over the network. TCP 445 is SMB over IP. This is a newer version where SMB can be consumed normally over the IP networks. The firewall ports necessary for file and printer sharing are not open (ports 445 and 139). Impact. Computers will not be able to access shared folders and other Server Message Block (SMB)-based network services on this server. Resolution. Enable File and Printer Sharing to communicate through the computer's firewall.
May 15, 2019 · In Windows NT it ran on top of NBT (NetBIOS over TCP/IP), which used the famous ports UDP 137 and 138, and TCP 139. With Windows 2000, Microsoft added the option to run SMB directly over TCP/IP, without the extra NBT layer. That's what TCP port 445 is used for. Enabling and disabling NBT to control ports 137, 138, and 139
Jan 10, 2018 · The port 139 is used for File and Printer Sharing but happens to be the single most dangerous Port on the Internet. This is so because it leaves the hard disk of a user exposed to hackers. SANS Internet Storm Center: port 139. Notes: Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly used port numbers for well-known internet services. Jun 10, 2020 · What are ports 139 and 445? Port 139: Used by SMB dialects that communicate over NetBIOS, a transport layer protocol designed to use in Windows Port 445: Used by newer versions of SMB (after Windows 2000) on top of a TCP stack, allowing SMB to communicate over the
Feb 08, 2009 · This technique will be taking advantage of Port 139. Most of the time,Port 139 will be opened. First of all,I will do a port scanning at the target computer which is 192.168.40.128. This computer is inside my LAN network. scan it using Nmap. I get the result and it shows Port 139 is opened up for me. Now you will need both of these tools:
Disable any dmz or port forwarding you may have configured. Disable UPNP . Enable SPI firewalls. If you use Cloud Connect some ports are opened for your remote configuration feature but I don't know which ones they are. So Microsoft grabbed a trio of three successive Internet ports 137, 138, and 139, to use for the transport of their existing NetBIOS protocol over IP-based LAN and WAN networks. The horrors of insecurity resulting from Microsoft's exposure of their NetBIOS protocol to the Internet are legendary. The service uses all the following ports: 135/tcp, 135/udp, 137/udp 138/udp, 139/tcp, 445/tcp. MS Security Bulletin outlines another critical Buffer Overrun RPC vulnerability that can be exploited via ports 135, 139, 445, 593 (or any other specifically configured RPC port). You should filter the above mentioned ports at the firewall level and Port 139. Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time. Official On EMC Control Station - HTTP port 80 and HTTPS port 443. On Windows File Servers managed without an agent - Standard RPC ports 139 and 445. For Veritas File System servers - HTTPS port 5634, and 2049 (TCP,UDP) and 111 (TCP,UDP) for NFS. Windows File Server agent node Communication Service, HTTPS port 8383 DataInsightConfig service, port 8282