Merge pull request 'Add Readme' (#8) from devel into master

Reviewed-on: #8

services/firewall/iptables/iptablesRules.md

@@ -1,33 +0,0 @@
-# IPTABLES
-
-## Introduction
-
-* `iptables` is a systemd service and hence started accordingly.
-* `/etc/iptables/iptables.rules` will be applied when you start or enable the `iptables.service`.
-* After adding rules via command-line as shown in the following sections, the configuration file is not changed
-  automatically — you have to save it manually:
-
-  ```iptables-save -f /etc/iptables/iptables.rules
-  ```
-
-* Listing rules with `iptables -nvL`.
-
-## Basic Rules (Offline setup)
-
-### FORWARD
-
-* First of all, our computer is not a router (unless, of course, it is a router). We want to change the default policy on the FORWARD chain from ACCEPT to DROP
- `iptables -P FORWARD DROP`
-
-## INPUT
-
-1. `iptables -A INPUT -i lo -j ACCEPT`
-2. `iptables -A INPUT -n conntrack -ctstate ESTABLISHED,RELATED -j ACCEPT`
-3. `iptables -A INPUT -n conntrack -ctstate INVALID -j DROP`
-4. `iptables -A INPUT -p tcp --sport 22 -j ACCEPT`
-5. `iptables -A INPUT -j DROP`
-
-## OUTPUT
-
-1. `iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT`
-2. `iptables -A OUTPUT -j DROP`