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.
While Port 139 is known technically as ‘NBT over IP’, Port 445 is ‘SMB over IP’.SMBstands for ‘Server Message Blocks’. Server Message Block in modern language is also known asCommon Internet File System. The system operates as an application-layer network protocol primarily used for of...
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...
Since a decade ago, it has not been safe to open ports 135 through 139 and 445. Although opening ports 139 and 445 to the Internet isn't inherently harmful, doing so has several acknowledged drawbacks. Using the netstat command, you may determine whether a port is open. Fix everything Ke...
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...
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TCP & UDP port 139 (NetBIOS Session) TCP & UDP port 445 (SMB over TCP) TCP port 1688 (Microsoft Key Management Server, inbound only) Permanently blocked These ports are commonly abused for DDOS attacks. These blocks are permanent and cannot be removed. TCP & UDP port 17 TCP & UDP po...
what port or ports are used for File sharing in windows? 回答1 I've seen all of these..file sharing related UDP-137, UDP-138, TCP-139,TCP-445 And possibly TCP port 135, though that may be something to do with something called "RPC" (source (archived)). on an windows 7 machine ...
The following describes how to configure a security policy to block ports with number 135, 137, 138, 139, 445, and 3389. Create a service group. Choose Object > Service > Service Group and click Add. Enter the port number in the Available area to query the corresponding service and add ...