Contains proven a backdoor / Backdoor / monitoring interface

These router models contain a "secret" remote access interface [...]
Especially for this model this backdoor was not removed at the insistence of customers in the wake, but only hidden [...]

The backdoor allows the configuration of the device by third parties. For example, the Internet traffic of the person concerned are monitored.

You should think hard to buy from a manufacturer who has his devices such "sniffer interface" missed and deal with the events as this (hide instead remove!)