Since the last updates IPFire offers more encryption options. But by the fact that the IOS software does not yet support this is problematic. Connect you can though but the rest does not work. So if the mobile usage is important to you, you should first keep their hands off the new encryption types. The new variants are the following: CAMELLIA-128-CBC, CAMELLIA-192-CBC und CAMELLIA-256-CBC.
CAMELLIA-256-CBC