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== Block URLs and advertising == | == Block URLs and advertising == | ||
Revision as of 18:54, 9 October 2012
Main Page (en) | Alternative browser configuration (en)
This manual is not complete and not verified or maintained by JonDos. Please address possible questions to the forum, or major contributors to this page (see history), not the support of JonDos.
Download Opera
Make sure to use always the latest version of Opera !
Opera 12.00 Release 2012-Jun-14 Changelog Opera 12.00 Version history
Proxy settings
In recent versions you can set a common proxy setting for all protocols, in older versions you had to fill in separately. Enter server address 127.0.0.1 and port 4001 (you can change 4001 to some other number in JonDo settings, then use same value in the browser proxy settings too). For Tor the settings are similar, just the default port value is 8118. Make sure to cover HTTP, HTTPS and FTP protocols, for possible exotic or archaic protocols like Gopher you can enter invalid port 0.
Adjust Header Data and User Agent
User Prefs -> Custom User-Agent
There you can enter a modified User Agent:
Opera/9.80 (X11; U; Linux i686; en-US; rv:1.9.2.3) Presto/2.2.15 Version/10.10
Network -> HTTP Accept
text/html,application/xml,*/*
Network -> HTTP Accept Language
en-us
Control plugins
Preferences -> Advanced -> Content -> Enable plug-ins.
In version 12 of Opera, plug-in execution in a separate process was introduced, but then temporarily disabled due to problems. This is a security feature, but for privacy this doesn't bring too much benefit. All other precautions do apply anyway.
Control Java
Java is needed to execute JonDo but Java also serves as a browser plugin than can bring a security and anonymity risk. Java is independent from JavaScript, while without JavaScript many pages are only partially usable or even unusable, Java is rarely a benefit. Disable in Preferences -> Advanced -> Content -> Enable plug-ins. The other and probably safer way is to install JonDo as "portable" - in that case Opera (like any other browser) will simply not find the Java used by JonDo (there should be no other Java on the system).
Settings for improved security and privacy
To enter the settings page, type in following special address:
opera:config
There you can change following settings:
Option:Persistent Storage
Domain Quota For localStorage set to 0 (Domstorage)
Global Quota For localStorage set to 0
Databases Access Handling set to false
Option:Visited Link
Visited Links State set to 0 (Protect from history readout)
Option:Author Display Mode
Author Font and Colors set to false (fixing the font-face problem)
Option:User Display Mode
User Font and Colors set to false (fixing the font-face problem)
Option:User Agent
Allow Components In UA String Comment set to false
Option:UserPref
Allow Scripts To Navigate In History set to false
Enable Webfonts set to false
Google TLD Downloaded set to false
History Navigation Mode set to 0
Max Direct History Lines set to 0
Max Global History Lines set to 0
Max Window History Lines set to 1 (disables tab history, if you want to use "back" and "forward" buttons, set a bigger value or keep the default)
Show History In Addressfield Autocompletion set to false
Show Searches In Addressfield Autocompletion set to false
Special effects set to false
Visited Pages set to false
Option:Diskcache
Enabled set to false
Size set to 0
Cache Docs set to false
Cache Figs set to false
Media Cache Size set to 0
Empty On Exit set to true
Option:Cache
Cache HTTPS After Sessions set to false
Cache Figs set to false
Cache Docs set to false
Application Cache Quota set to 1000
Option:Security Prefs
Enable TLS v1.1 set to true
Enable TLS v1.2 set to true
Certificate revocation lists for ssl set to true
Strict Transport Security support set to true
Strict EV Mode set to true
Warn About Imported CA Certificates set to true
Multimedia
Allow Autoplay set to false
BitTorrent
Bittorrent set to false (if not needed)
Autoupdate
Plugin Auto Install Enabled set to false (avoid automatic installation of missing plugins)
Do Not Track Header
Settings->Extended->Security
Here you can set the Do Not Track Header.
If you don't want to use the WebGL feature, you can disable it this way:
User Prefs
webgl set to 0
Addons improving the security
NotScripts
You can disable JavaScript either completely, or selectively using the NotScripts addon. After installation, set the Javascript-Cache of Opera to the value 5000.
NoAds Advanced
This addon allows you to block advertising and tracking activities of web pages.
Alternative search engines in Opera
Launch for example Blekko.
Move the mouse arrow into the search field, with a right click call the context menu, and pick "Create Search".
You will see the menu to register a search engine (see screenshot). You have to set up a keyword, in this case "bl" (blue arrow). You have to decide, whether this one has to become the default search engine (red arrow).
Further privacy-friendly search engines see Other_use_cases#Web_searching.
Block URLs and advertising
Opera checks the file urlfilter.ini as a block list. The file can hold full names as well as RexExe, matched URLs will not be shown. A list can be downloaded from here: https://www.awxcnx.de/download/urlfilter.ini (right click). Place the file into following directory:
- Windows (portable Opera) : inside the installation in "profile" directory, besides file "operaprefs.ini"
- XP (if Opera not portable) :
C:\Documents and Settings\...\Application Data\Opera\Opera\ - Vista: (if Opera not portable)
C:\Users\<username>\AppData\Roaming\Opera\Opera\ - Linux:
$HOME/.opera/ - OSX:
/Users/<username>/Library/Preferences/Opera Preferences/
You must restart Opera for the changes to take effect.
Other risks
Opera still has the Font-Face-Problem in version 11.62 :
but it can be fixed this way:
Option:Author Display Mode
Author Font and Colors set to false
Option:User Display Mode
User Font and Colors set to false
Another problem is the History-Sniffing , it can be fixed this way:
Option:Visited Link
Visited Links State set to 0
Run Anontest to check the problems and success of fixes.
Performance tuning
Worst old resolved bugs
- Versions 11.00 and 11.01 were almost unusable due to broken noscript feature
- Versions 11.xx (reportedly fixed in 12) ignored HTTPS proxy settings in some cases
(forum thread: https://anonymous-proxy-servers.net/forum/viewtopic.php?f=9&t=6390)
Use this information at your own risk.
