What Is Port 7547 Used For?

Port 7547 is a communication port that is used by internet service providers (ISPs) to manage and configure their remote access equipment, such as routers, modems, and gateways. It is considered as a vulnerable port that can be exploited by attackers to gain unauthorized access to the service provider’s network or end-users’ devices.

The port is typically used for various remote management protocols, such as the Remote Management Protocol (TR-069), which allows ISPs to remotely manage and troubleshoot various networking devices. However, the use of this port can also expose these devices to security risks, especially if the access credentials are not properly secured or if the device’s firmware is outdated. Therefore, it is important for service providers and end-users to understand the potential impacts of port 7547 and ensure that appropriate security measures are in place to protect against potential threats.

What is Port 7547 Used For?

Port 7547 is used for TR-069 (Technical Report 069) or CPE WAN Management Protocol (CWMP). This protocol is widely used to manage remote devices such as routers, modems, gateways, and other network equipment.

Below are some more detailed explanations about the use of port 7547:

– TR-069/CWMP is an XML-based protocol that allows a server to manage one or more client devices remotely. The protocol was introduced by the Broadband Forum, a consortium of telecom operators, vendors, and other stakeholders.
– Port 7547 is the default port number for TR-069/CWMP communication. When a client device needs to communicate with a CWMP server, it uses port 7547 to establish a connection.
– The protocol uses a client-server model, where the client device (also called a CPE, or customer premises equipment) initiates a connection to the server using HTTP (Hypertext Transfer Protocol) or HTTPS (HTTP Secure). The server may be operated by the device manufacturer, the service provider, or a third-party management platform.
– TR-069/CWMP provides several features to manage device configuration, firmware upgrades, diagnostics, and monitoring. For example, the server can send commands to the device to change its settings, reset or reboot it, or obtain status information such as signal strength, uptime, or error logs.
– The protocol uses a secure authentication and encryption mechanism to ensure the confidentiality and integrity of the communication. The client and server exchange digital certificates to verify their identities, and all messages are encrypted using TLS (Transport Layer Security) or SSL (Secure Sockets Layer).
– Port 7547 has been a target for some security vulnerabilities and exploits, especially in the context of Internet of Things (IoT) devices that use the protocol. Hackers may try to exploit weak credentials, buffer overflows, or injection attacks to take control of the devices or use them as part of a botnet. Therefore, it’s essential to ensure that TR-069/CWMP implementations are properly secured and up-to-date.


1. What is port 7547 used for?
Port 7547 is used for remote management and configuration of DSL modems and routers.

2. Is port 7547 vulnerable to hacking?
Yes, port 7547 has been found to be vulnerable to various exploits and attacks.

3. Can port 7547 be closed to increase security?
Yes, port 7547 can be closed on the router or modem to prevent external access to the management settings.

4. What kind of information can be accessed through port 7547?
Through port 7547, an attacker can potentially access a wealth of sensitive information, including login credentials, network configurations, and firmware updates.

5. How can I protect my network from attacks through port 7547?
To protect your network from attacks through port 7547, make sure to keep your router or modem’s firmware up-to-date, use strong and unique passwords, and consider implementing additional security measures such as a firewall or intrusion detection system.


To sum up, port 7547 is utilized by internet service providers for remote management of customer’s modems. Sadly, cybercriminals have exploited this port for their malicious intent resulting in security breaches. Hence, there’s a need for both internet service providers and users to take the necessary precautions in ensuring their network’s security is up to par. It can be achieved through keeping the router firmware up-to-date and changing the default username and password. Remember, securing your router is a crucial element in maintaining the integrity and privacy of your network.

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