• Attackers are actively scanning for exposed Docker APIs on port 2375 and use them to deploy a malicious payload which drops a Dofloo Trojan variant, a malware known as a popular tool for building.
• Checking the open ports shows that the port 2375 is taken by docker desktop service. Is this warning a fake?-) After a clean install of 3.5.1 and if 'expose daemon.' Was not set before update: if the setting ('expose daemon.' ) is set for the first time, no warning appears.

Port Number Transport Protocol Description Assignee Contact Registration Date Modification Date Reference Service Code Unauthorized Use Reported Assignment Notes; docker: 2375: tcp: Docker REST API (plain text) ChristopherLiljenstolpe 2014-04-17: docker-s: 2376: tcp: Docker REST API (ssl) ChristopherLiljenstolpe 2014-04-17: swarm: 2377: tcp.

Docker Port 2375 Already In Use

External Resources
SANS Internet Storm Center: port 2375

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.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
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. Guaranteed communication/delivery is the key difference between TCP and UDP.
UDP ports use the Datagram Protocol. Like TCP, UDP is used in combination with IP (the Internet Protocol) and facilitates the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming and realtime gaming, where dropping some packets is preferable to waiting for delayed data.
When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them. This can be accomplished in both Windows command prompt and Linux variants using the 'netstat -aon' command. We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software. For more detailed and personalized help please use our forums.

Docker Windows Port 2375

• SG Ports Database » Vulnerable Ports
• SG Security Scan » Scanned Ports » Commonly Open Ports