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Port 2048 Details


known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
2048 udp applications Web Cache Control Protocol (WCCP) in Cisco Cache Engine for Cisco IOS 11.2 and earlier does not use authentication, which allows remote attackers to redirect HTTP traffic to arbitrary hosts via WCCP packets to UDP port 2048.
References: [CVE-1999-1175]

Port is IANA registered for dls-monitor
SG
2048 tcp malware Backdoor.Win32.Zxman / Missing Authentication - Backdoor.Win32.Zxman by Zx-man listens on TCP port 2048 for commands. However, anyone who can reach the infected host can take control as there is no authentication in place. Not much of a self-respecting backdoor. Third party intruders or incident responders who logon will be greeted with a welcome screen and help menu allowing for a wide-range of commands.
References: [MVID-2021-0041]

Backdoor.Win32.Zxman / Unauthenticated Remote Code Execution - the malware by "Zx-man" listens on TCP port 2048. Third-party attackers who can reach an infected system can run commands made available by the backdoor.
References: [MVID-2022-0478]
SG
1971,2047,2048 udp applications Camerades Portforward
2047,2048 tcp applications Camerades Portforward
2048 tcp,udp dls-monitor dls-monitor Nmap
2048 tcp threat Some Shiva/Spider Integrator routers listen on this port for a Telnet connection for configuration. Bekkoame
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External Resources
SANS Internet Storm Center: port 2048

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.

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