A lot of people already use adblocker plugins within their desktop browsers, but what if you are using your (smart) phone, tablet, watch or any other (wlan) gadget!? Getting rid of annoying ads, trackers and other abuse sites (like facebook) is simple: block them with your router. When the DNS server on your router receives DNS requests, you will sort out queries that ask for the resource records of ad servers and return a simple 'NXDOMAIN'. This is nothing but **N**on-e**X**istent Internet or Intranet domain name, if domain name is unable to resolved using the DNS server, a condition called the 'NXDOMAIN' occurred.
* Support of the following fully pre-configured domain blocklist sources (free for private usage, for commercial use please check their individual licenses)
* Zero-conf like automatic installation & setup, usually no manual changes needed
* Simple but yet powerful adblock engine: adblock does not use error prone external iptables rulesets, http pixel server instances and things like that
* Provides top level domain compression ('tld compression'), this feature removes thousands of needless host entries from the blocklist and lowers the memory footprint for the DNS backend
* Provides a 'DNS File Reset', where the generated DNS blocklist file will be purged after DNS backend loading to save storage space
* Source parsing by fast & flexible regex rulesets, all rules and source information are placed in an external/compredd JSON file ('/etc/adblock/adblock.sources.gz')
* Overall duplicate removal in generated blocklist file 'adb_list.overall'
* Additional local blacklist for manual overrides, located in '/etc/adblock/adblock.blacklist'
* Additional local whitelist for manual overrides, located in '/etc/adblock/adblock.whitelist'
* Procd based init system support ('start', 'stop', 'restart', 'reload', 'enable', 'disable', 'running', 'status', 'suspend', 'resume', 'query', 'report', 'list', 'timer')
* Auto-Startup via procd network interface trigger or via classic time based startup
* Suspend & Resume adblock temporarily without blocklist reloading
* Provides comprehensive runtime information
* Provides a detailed DNS Query Report with DNS related information about client requests, top (blocked) domains and more
* Provides a powerful query function to quickly find blocked (sub-)domains, e.g. for whitelisting
* Provides an easily configurable blocklist update scheduler called 'Refresh Timer'
* Includes an option to generate an additional, restrictive 'adb_list.jail' to block access to all domains except those listed in the whitelist file. You can use this restrictive blocklist manually e.g. for guest wifi or kidsafe configurations
* Includes an option to force DNS requests to the local resolver
* [OpenWrt](https://openwrt.org), tested with the stable release series (19.07.x) and with the latest rolling snapshot releases. On turris devices it has been successfully tested with TurrisOS 5.1.x
<b>Please note:</b> Older OpenWrt releases like 18.06.x or 17.01.x are _not_ supported!
<b>Please note:</b> Devices with less than 128 MByte RAM are _not_ supported!
* A download utility with SSL support: 'wget', 'uclient-fetch' with one of the 'libustream-*' ssl libraries, 'aria2c' or 'curl' is required
* A certificate store such as 'ca-bundle' or 'ca-certificates', as adblock checks the validity of the SSL certificates of all download sites by default
* Optional E-Mail notification support: for E-Mail notifications you need to install the additional 'msmtp' package
* Optional DNS Query Report support: for DNS reporting you need to install the additional package 'tcpdump-mini' or 'tcpdump'
* Optional support for gnu awk as alternative to the busybox default, install the additional package 'gawk'
* Update your local opkg repository (_opkg update_)
* Install 'adblock' (_opkg install adblock_). The adblock service is enabled by default
* Install the LuCI companion package 'luci-app-adblock' (_opkg install luci-app-adblock_)
* It's strongly recommended to use the LuCI frontend to easily configure all aspects of adblock, the application is located in LuCI under the 'Services' menu
* Update from a former adblock version is easy. During the update a backup is made of the old configuration '/etc/config/adblock-backup' and replaced by the new config - that's all
+ system : CZ.NIC Turris Mox Board, TurrisOS 5.1.0 81264ebb51991aa2d17489852854e3b5ec3f514d
</code></pre>
The 'last\_run' line includes the used start type, the run duration, the memory footprint after DNS backend loading (total/free/available) and the date/time of the last run.
Add an unique object name, make the required changes to 'url', 'rule', 'size' and 'descurl' and finally compress the changed JSON file _gzip /etc/adblock/adblock.sources.gz_ to use the new source object in adblock.
<b>Please note:</b> if you're going to add new sources on your own, please make a copy of the default file and work with that copy further on, cause the default will be overwritten with every adblock update. To reference your copy set the option 'adb\_srcarc' which points by default to '/etc/adblock/adblock.sources.gz'
<b>Please note:</b> when adblock starts, it looks for the uncompressed 'adb\_srcfile', only if this file is not found the archive 'adb\_srcarc' is unpacked once and then the uncompressed file is used
Please join the adblock discussion in this [forum thread](https://forum.openwrt.org/t/adblock-support-thread/507) or contact me by mail <dev@brenken.org>
