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TR-069 CPE WAN Management
The TR-069 CPE WAN Management Protocol enables ISPs to remotely configure, monitor, and manage customer-premises equipment (CPE) like routers and modems. Widely used in broadband deployments, it facilitates automated provisioning and firmware updates, streamlining service delivery and support. While convenient, its exposure requires careful security management..
TR-069, also known as CPE WAN Management Protocol (CWMP), is a technical specification designed to enable efficient communication between customer-premises equipment (CPE)—such as home routers, gateways, and modems—and an Auto Configuration Server (ACS) operated by an Internet Service Provider (ISP). The protocol is built over SOAP/HTTP(S) and leverages XML for message formatting, providing a standardized way for ISPs to automate deployment, diagnostics, and servicing of broadband devices.
CWMP specifies a bidirectional communication model where the CPE acts as an HTTP(S) client, initiating connections to the ACS to request configuration changes, firmware updates, or transmit status information. It supports remote management tasks such as initial device provisioning, dynamic service updates, performance monitoring, fault management, and software management, all coordinated by the ACS.
Typically, TR-069 communications occur over TCP port 7547, though the implementation may employ UDP in some cases for discovery or notifications. While many xDSL and broadband providers have this port enabled by default, actual usage varies, with some ISPs disabling remote management or restricting access to internal management networks.