Questions and answers

What are ports 445 and 139 used for?

What are ports 445 and 139 used for?

Ports 445 and 139 Explained The Server Message Block Protocol (SMB Protocol) is a client-server communication protocol used for sharing access to files, printers, serial ports, and data on a network. It can also carry transaction protocols for authenticated inter-process communication.

What do you need to know about port 443?

When we use a TLS certificate, the communication channel between the browser and the server gets encrypted to protect all sensitive data exchanges. All such secure transfers are done using port 443, the standard port for HTTPS traffic. However, HTTPS port 443 also supports sites to be available over HTTP connections.

What kind of Port is 5353 on Mac?

Port(s) Protocol Service Details Source; 5353 : tcp,udp: mdns: Multicast DNS (MDNS) [IESG] (IANA official) iChat, Mac OS X Bonjour/Zeroconf port Plex Media Server uses port 5353 UDP locally for older Bonjour/Avahi network discovery. TeamViewer remote desktop protocol uses ports 5938/TCP, 5939/TCP, 5353/UDP

Why does SMB still use port 445 and 139?

SMB still uses port 445. This proved to be problematic as CIFS was a notoriously chatty protocol that could ruin network performance due to latency and numerous acknowledgments. While Microsoft estimates that SMB/CIFS compromised less than 10% of network traffic in the average Enterprise network, that is still a significant amount of traffic.

What does port 49152 through 65535 do?

Dynamic/Private : 49152 through 65535. TCP ports use the Transmission Control Protocol, the most commonly used protocol on the Internet and any TCP/IP network. TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent.

What is port 137 used for in Windows?

Port 137 Details. NetBIOS is a protocol used for File and Print Sharing under all current versions of Windows. While this in itself is not a problem, the way that the protocol is implemented can be.