Protecting an ADSL modem

An ADSL modem acts as a router between your home network and the internet. The modem should always be protected.

An ADSL modem without adequate protection can be misused for example:

  • to route harmful traffic or spam;
  • to direct traffic to harmful websites.

Protecting an ADSL terminal device

  • Ensure that the modem's control panel can only be accessed from inside a internal network.
  • Change the control panel password immediately when you start using the modem.
  • Update the modem's firmware from time to time. You can check the availability of updates from the manufacturer's website or use the automatic update feature of the modem control panel.

Key words: Information security , Internet , Data protection

Updated 02.10.2013

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The Finnish Communications Regulatory Authority (FICORA)

The National Cyber Security Centre Finland (NCSC-FI)

Itämerenkatu 3 A

P.O. Box 313


Media contacts by telephone +358 295 390 248