What port number is 137?
What port number is 137?
Service Name and Transport Protocol Port Number Registry
| Service Name | Port Number | Description |
|---|---|---|
| netbios-ns | 137 | NETBIOS Name Service |
| netbios-ns | 137 | NETBIOS Name Service |
| trim | 1137 | TRIM Workgroup Service |
| trim | 1137 | TRIM Workgroup Service |
Is 137 UDP or TCP?
Port 137 Details
| Port(s) | Protocol | Service |
|---|---|---|
| 137 | tcp,udp | netbios-ns |
| 137 | tcp,udp | |
| 137 | tcp | trojan |
| 137 | udp | trojan |
What type of traffic is normally seen over UDP port 137?
NBNS traffic
The well known UDP port for NBNS traffic is 137. TCP: NBNS can also use TCP as its transport protocol for some operations, although this might never be done in practice.
What is UDP port 445 used for?
Port 445 is used by newer versions of SMB (after Windows 2000) on top of a TCP stack, allowing SMB to communicate over the Internet. This also means you can use IP addresses in order to use SMB like file sharing.
Is NetBIOS a protocol?
NetBIOS is a non-routable OSI Session Layer 5 Protocol and a service that allows applications on computers to communicate with one another over a local area network (LAN).
What is port 123 used for?
Ports used by Apple products
| Port | TCP or UDP | Used by |
|---|---|---|
| 123 | UDP | Date & Time preferences, network time server synchronization, Apple TV network time server sync |
| 137 | UDP | — |
| 138 | UDP | Windows Datagram Service, Windows Network Neighborhood |
| 139 | TCP | Microsoft Windows file and print services, such as Windows Sharing in macOS |
