Recently a problem was discovered with the firewall on the Fonera 2.0n: When it is running in “bridge mode” (by selecting “bridge” in the internet settings screen), users can access the LAN network from the public wifi network (FON_FREE_INTERNET signal).
Because of the severity of this problem, we’ve provided a hotfix that fixes just this issue. We recommend all users to install this hotfix, though it should only affect users running in bridge mode.
This issue does not affect the Fonera 2.0g or SIMPL, which do not support bridge mode yet.
The hotfix is available for the 22.214.171.124 firmware. To install it, go to the “Applications” page on the dashboard of your Fonera and click the “plus” icon next to “Hotfix: Firewall in bridge mode”.
Alternatively, you can download the hotfix manually and upload it again at the the “Applications” page on the Fonera dashboard. This might also work on firmwares older than 126.96.36.199, but this has not been tested. If you are still running an older firmware, we recommend that you upgrade and then install the hotfix.
Note that if you ever do a factory reset, you will need to install the hotfix again.
Also note that right now, version 2 of this hotfix is available. If you already installed version 1, it is not possible to upgrade (because the hotfix cannot be uninstalled). However, version 1 offers the same protection, but might break the public signal in some very specific cases (which should not normally occur). If you really want to upgrade to version 2, you’ll need to do a factory reset to remove the hotfix.