Discover the basics around SMB protocol, port 445 and 139 and differences. Read about whether SMB is secure and how to protect against dangerous attacks.
For instance, on Windows, SMB can run directly over TCP/IP without the need for NetBIOS over TCP/IP. This will use, as you point out, port 445. On other systems, you’ll find services and applications using port 139. This means that SMB is running with NetBIOS over TCP/IP. Maliciou...
TCP 139: This port is used for SMB over NetBIOS over TCP/IP. It facilitates file and printer sharing and other SMB services over the network. NetBIOS provides a way for applications on separate computers to communicate over a local area network (LAN). TCP 445: Introduced with the direct ...
While port 139 and 445 aren't inherently dangerous, there are known issues with exposing these ports to the Internet. You can check if a port is open by using the netstat command. There is a common misconception that an open port is dangerous. This is largely driven by a lack of underst...
Port 139 (NetBIOS-SSN) Port 143 (IMAP) Port 53 (Domain) Port 135 (MSRPC) Port 3306 (MySQL) Port 8080 (HTTP-Proxy) Port 1723 (PPTP) Port 111 (RPCBind) Port 995 (POP3S) Port 993 (IMAPS) Port 5900 (VNC) Why Should You Use a TCP Port Scan Unneeded open ports on the webserver...
What is common port No. of TCP? Информациясигнализации Null Обработка A: 7 TCP Echo Simple TCP/IP Service 9 TCP Discard Simple TCP/IP Service 13 TCP Daytime Simple TCP/IP Service 17 TCP Quotd Simple TCP/IP Service ...
If the protocol types, source IP address ranges, and destination IP address ranges are the same, the rule that defines the smallest Layer 4 port number (TCP/UDP port number) range is processed. If the preceding ranges are all the same, the rule with the smallest ID is processed. Layer ...
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"parallel port switchbox." these switches allow you to connect multiple devices to a single parallel port and switch between them as needed. it is important to note that the data transfer speed and reliability may be affected when multiple devices are connected simultaneously. can i use a ...