NAME

       dbab - dnsmasq based ad blocking

SYNOPSIS

       # start dbab-svr server
       /etc/init.d/dbab start

       # stop dbab-svr server
       /etc/init.d/dbab stop

       # get/update ad blocking list
       /usr/sbin/dbab-get-list

       # add your own to the ad blocking list
       /usr/sbin/dbab-add-list

DESCRIPTION

       dbab provides a total solution for SOHO service environment, smoothly integrates DHCP, DNS, local caching
       and  Ad blocking into harmony. Ad blocking is done by DNSmasq + Pixelserv, i.e., done at the DNS level --
       all requests to ad-sites are blocked right there at DNS. No more user space  extensive  pattern  matching
       necessary at all. Work for your mobile devices as well. You don´t need to install anything to your mobile
       devices to enjoy the ad-free and speed-up browsing.

ALTERNATIVES

       People  may  also  use  browsers´  adblock-plus extension to block ads, but fewer think over how it works
       internally. Here is an overview of Adblock Plus from a thousand mile high [1]  --  whenever  the  browser
       needs  to  load something, the extension kicks in and do a thorough pattern matching of all known ad urls
       using regular expressions, then hectically replace all found ad urls with something else. This is done on
       every page, every load, and every component of the web page, using JavaScript. Thus it is by nature  slow
       and  CPU  intensive,  at  least inefficient. There are other alternatives to this, e.g., privoxy, but the
       concepts are the same.

       [1] http://adblockplus.org/en/faq_internal

ADVANTAGES

       Comparing to other ad-blocking efforts, dbab will be super light. Only a few  operations  are  enough  to
       determine  and  stop the ads. No heavy-lifting (using CPU intensive URL pattern matching) necessary. Thus
       it will be lighting fast as well.

       The advantages of using dbab are:

       ○   Work at the DNS level. Leave the web pages intact, without any pattern matching, string substitution,
           and/or html elements replacing.

       ○   Work for your mobile devices as well. Were you previously in the dilemma of choosing ads free or slow
           response for your mobile devices (iphone, ipad, etc)? Now you don´t. You don´t need  to  install  any
           thing  to  your  mobile  devices  for  them to enjoy the ad-free browsing experience. Moreover, their
           browsing speed will increase dramatically on revisited pages/images.

       ○   Serve instantly. All ads will be replaced by a 1x1 pixel gif image served  locally  by  the  dbab-svr
           server.

       ○   Maintenance  free.  You  don´t  need to maintain the list of ad sites yourself. The block list can be
           downloaded from pgl.yoyo.org periodically. If you don´t like some  of  the  entries  there,  you  can
           add-to or remove-from that list easily.

DBAB-SVR

       The  dbab-svr  is  a  super  minimal  web  server  / pixelserv, it has one purpose of serving a 1x1 pixel
       transparent gif file. It can optionally provide the automatic WPAD service as well if so  configured.  By
       default it listens on localhost.

DBAB-GET-LIST

       The  dbab-get-list  is  used  to  get  dnsmasq blocking list from pgl.yoyo.org to be used by DNSmasq. The
       result is stored as /etc/dnsmasq.d/dbab.adblock.conf.

       You can run it once, or put it in a cron job so as to update the block list periodically. E.g., to update
       on a weekly basis:

           ln -s /usr/sbin/dbab-get-list /etc/cron.weekly/

DBAB-ADD-LIST

       You can use dbab-add-list to add your own entries to dnsmasq blocking list, if the list from pgl.yoyo.org
       is not sufficient for you. The result is stored as /etc/dnsmasq.d/dbab.trashsites.conf.

DBAB-CHK-LIST

       The dbab-chk-list can help you to check if your own list is already covered by pgl.yoyo.org.

DHCP-ADD-WPAD

       he dhcp-add-wpad will take the content in /etc/dbab/dbab.proxy as the host  name  of  the  squid  caching
       server,  as  well  as  taking  the  content in /etc/dbab/dbab.addr as the IP address of dhcp server, then
       enable the automatic WPAD service within the system, with the help of the DNS and DHCP server.

FILES

       /etc/dbab/dbab.addr:
              The IP address that dbab-svr listens on. Defaults to localhost.

       /etc/dbab/dbab.list-:
              The entries you want to filter out from the pgl.yoyo.org lists. List sites you still wish to visit
              there.

       /etc/dbab/dbab.list+:
              The entries you want  to  add  to  blocking  list  on  top  of  the  pgl.yoyo.org  list,  used  by
              dbab-add-list.

       /etc/dbab/dbab.proxy:
              The name or IP address of your squid caching server. Defaults to localhost.

       /usr/share/doc/dbab/dbab.md:
              The more detailed introduction and installation guild.

AUTHOR(S)

       Copyright: 2013~2015 Tong SUN, suntong001 from users.sourceforge.net License: BSD-3-Clause

       The pixelserv was originally downloaded from
       http://proxytunnel.sourceforge.net/files/pixelserv.pl.txt
       Wrote by Piet Wintjens, with BSD (no advertising clause) license.

                                                  December 2019                                          DBAB(8)