====== Hosts File ======

See also a **better way**: **[[internet:security:pihole|Pi-Hole DNS Sinkhole and Add Blocker]]**

The /etc/hosts file contains name resolution info that overrides DNS.  You might add entries in the /etc/hosts file that is not in DNS.

Here we use the /etc/hosts file as an ad filter.

===== Configuring =====

==== winhelp2002 ====

Here is a public hosts file that we will use as a starting point:

<file>
wget http://www.mvps.org/winhelp2002/hosts.txt

vim hosts.txt
</file>

Remove all lines before ''# [Start of entries generated by MVPS HOSTS]'' and append the rest to your own ''/etc/hosts'' file...or continue on to add the second list.

==== yoyo.org ====

Here we download another list and concatenate it with the previously downloaded list of adservers and your existing ''/etc/hosts'' file:

<file>
wget -O hosts "http://pgl.yoyo.org/adservers/serverlist.php?hostformat=hosts&showintro=0&startdate[day]=&startdate[month]=&startdate[year]=&mimetype=plaintext"
sed -i 's/127.0.0.1/0.0.0.0/g' hosts
cat hosts >> hosts.txt
</file>

<file>
vim hosts.txt

# Set to unix file format
:set ff=unix

# Strip out DOS carriage returns - enter Ctrl-v Ctrl-m to input the ''^M''
:%s/^M//g

# Strip all blank lines and comment lines
:g/\v^(#|$)/d

# Sort and remove duplicate lines
:sort u

cat hosts.txt >> /etc/hosts
</file>

===== SME Server =====

http://wiki.contribs.org/Block_Adware_Sites

Here we use both adserver lists together:

<file>
wget http://www.mvps.org/winhelp2002/hosts.txt

mv hosts.txt /etc/e-smith/templates/etc/hosts/30hosts

vim  /etc/e-smith/templates/etc/hosts/30hosts
</file>

Remove all lines before "#start of lines added by WinHelp2002" and save.

Now we add the contents of another list:

<file>
wget -O hosts "http://pgl.yoyo.org/adservers/serverlist.php?hostformat=hosts&showintro=0&startdate[day]=&startdate[month]=&startdate[year]=&mimetype=plaintext"

cat hosts >> /etc/e-smith/templates/etc/hosts/30hosts

expand-template /etc/hosts
</file>