ip address: added entry with geo-blocking section

wiki/bind.md

@@ -95,7 +95,7 @@ $TTL 1D
 
 
 To make the server you operate on the nameserver select a subdomain for it and
-subsitute `<servername>` for it and its IP address `<ip of server>`.
+subsitute `<servername>` for it and its [IP address](/wiki/ip_address.md) `<ip of server>`.
 The following uses a filled in example with multiple subdomains.
 It uses CNAME records as a placeholder for the ip.
 In the last section the domain itself `home.server` is mapped to the ip

wiki/chameleon.md

@@ -0,0 +1,14 @@
+# Chameleon
+
+[Chameleon](https://addons.mozilla.org/en-GB/firefox/addon/chameleon-ext/) is a
+[Firefox](/wiki/firefox.md) [add-on](/wiki/firefox.md#list-of-useful-firefox-add-ons) that spoofs
+your browser profile including user agent and screen size.
+It also can be used to change the [IP address](/wiki/ip_address.md)
+
+## Spoofing the IP Address
+
+This add-on can also be used to avoid [geo-blocking](/wiki/ip_address.md#geo-blocking) by selecting
+IP ranges in the `Headers` tab.
+The following are example ranges that work well for specific countries.
+
+- Brazil: `124.81.64.0` to `124.81.127.255`

wiki/firefox.md

@@ -24,11 +24,8 @@ The add-ons are grouped thematically
 
 The following add-ons increase the security or privacy.
 
-- [Chameleon](https://addons.mozilla.org/en-GB/firefox/addon/chameleon-ext/)
+- [Chameleon](/wiki/chameleon.md)
   spoofs your browser profile including user agent and screen size.
-  This add-on can also be used to avoid region locking by selecting IP ranges in the `Headers` tab.
-  An example for this is the range `124.81.64.0` to `124.81.127.255` that is assigned to brazilian
-  IP addresses.
 - [ClearURLs](https://addons.mozilla.org/en-GB/firefox/addon/clearurls) removes
   tracking elements from URLs.
 - [Consent-O-Matic](https://addons.mozilla.org/en-GB/firefox/addon/consent-o-matic)

wiki/ip_address.md

@@ -0,0 +1,16 @@
+# IP Address
+
+The IP address is a numerical label for a computer that is connected to a network using the
+Internet Protocol (IP).
+There are two versions of IP addresses: IPv4 and IPv6.
+
+## Geo-blocking
+
+Geo-blocking is the practice that restricts access to internet sites or content using information on
+the users location.
+This location is often obtained using the IP address.
+
+Geo-blocking can be evaded by using a [VPN service](/wiki/vpn.md).
+Sometimes the IP addresses that are used by VPNs are blocked by websites.
+To avoid this a spoofing tool like [Chameleon](/wiki/chameleon.md) for [Firefox](/wiki/firefox.md)
+can be used.

wiki/linux/ip.md

@@ -28,10 +28,10 @@ Disabling works accordingly by running:
 ip link set wlan0 down
 ```
 
-### Get Outside IP
+### Get Outside IP Address
 
 For VPN and other applications using a tunnel it can be useful to check the
-outside IP of your system.
+outside [IP address](/wiki/ip_address.md) of your system.
 The following command uses the `dig` command.
 It is either bundled in the `dig` package - like in
 [Arch Linux](/wiki/linux/arch-linux.md) - or in the `dnsutils`

wiki/linux/netplan.md

@@ -8,7 +8,7 @@ linux system via YAML files.
 ### Add more IP addresses to a system
 
 In the file `/etc/netplan/50-cloud-init.yaml` create an `addresses:` section
-for a device (for example an ethernet device) and list the IP addresses you
+for a device (for example an ethernet device) and list the [IP addresses](/wiki/ip_address.md) you
 want to add to the system to it.
 It has to be noted, that the added addresses should be outside of the DHCP
 range of your router.

wiki/tvheadend.md

@@ -24,7 +24,7 @@ This configuration includes the setup of different types of tuners.
 
 Using a Fritzbox as the router the build in SAT>IP tuner can be used.
 For this `--satip_xml http://192.168.178.1:49000/satipdesc.xml` needs to be
-added as a run option with the IP address matching the one of your Fritzbox.
+added as a run option with the [IP address](/wiki/ip_address.md) matching the one of your Fritzbox.
 
 For multiple tuners to work the hosting system has to have multiple IP addresses
 as only one address can be bound to one tuner at the time.
@@ -71,7 +71,7 @@ Select them one-by-one, check `Enabled`, select your just set up network in
 `Networks` aswell as `DVB-C` as the network type.
 Set `Next tune delay in ms (0-2000)` to `200` and select `On` for
 `Pass specinv`.
-Then put in one of the IP addresses added to your system in the previous step
+Then put in one of the [IP addresses](/wiki/ip_address.md) added to your system in the previous step
 under `Tuner bind IP address`.
 Then click `Save`.
 

wiki/vpn.md

@@ -2,9 +2,9 @@
 
 A VPN is a virtual private network.
 It uses a secure connection between a computer and a network or two networks.
-It can be used to display another IP address but does not make tracking or
+It can be used to display another [IP address](/wiki/ip_address.md) but does not make tracking or
 fingerprinting of the device impossible.
-For the latter a plugin like [Chameleon for Firefox](/wiki/firefox.md#privacy-and-security-add-ons)
+For the latter a plugin like [Chameleon](/wiki/chameleon.md) for [Firefox](/wiki/firefox.md)
 can be used.
 VPNs feature a server and a client side.
 

wiki/wireguard.md

@@ -58,7 +58,7 @@ The following guide is based on a comments by the Reddit users
 To set up the usage of a local DNS the WireGuard configuration file needs to be
 changed.
 The following lines have to be appended under the `[Interface]` section and the
-DNS IP address (in this case `192.168.178.1`) has to be changed as needed.
+DNS [IP address](/wiki/ip_address.md) (in this case `192.168.178.1`) has to be changed as needed.
 `wg0` is the name of the configuration file (see [the usage section](#wg-usage))
 for reference.