HTTPS/SSL for additional encryption?

Yes! JonDo only anonymizes. It does not keep your data secret all the way to the receiver. An encrypted channel is set up between JonDo and the JonDonym servers only.

If you do not use SSL, however, the data leaves the final server in a Mix Cascade unencrypted. In order for data to be sent encrypted from the anonymization service to the requested server, the server has to support encryption. This is done with the standard SSL protocol. Therefore, calling up websites with "https" instead of "http" is recommended for sensitive data.

HTTP-Filter for browser information like browser type and operating system?

Yes! For optimal anonymity, all JonDonauts should show the same behaviour. By analysing and comparing the data tranferred by the browser, for example the browser type or the operating system, users may be partitioned into groups, which diminishes anonymity. A 100% effective filtering is only possible within the browser itself. For this purpose, we have created the JonDoFox profile.

Personal firewall?

Even while JonDo itself does not protect you from attacks from the Internet, we basically do not recommend using personal firewalls, as they often act as specific points of attack for a system. Moreover, personal firewalls often interfere with the smooth operation of JonDo.