We have added many additional security features to Sophos Firewall OS (SFOS) over the past few releases to ensure that your customers’ networks have optimal protection from the latest threats. This essential protection can only be maintained with regular updates to the latest software versions.

Based upon this, we have made some changes to our lifecycle policy for Sophos Firewall OS (SFOS) and are now announcing the End-of-Life date for some software versions:

With this change, we are announcing an end-of-life date of July 31, 2021, for:

  • v17.5 MR13 and older
  • v18.0 MR3 and older

For information on supported software versions kindly refer to the published retirement calendar under:

The lifecycle policy can be found under:

Should you have any questions or need further help, please do not hesitate to reach out to your local Sophos team.