Update README.md

README.md

@@ -30,29 +30,29 @@ Outbound packets belonging to the program dropped
 
 ### Creating the Group
 First we will create the controlled access group through which programs will be denied public network access 
-```
+``` bash
 groupadd no-internet
 ```
 And add your user to it
-```
+``` bash
 usermod -a -G no-internet $(whoami)
 ```
 You should now see no-internet as a group your user is a member of
 
 To check run
-```
+``` bash
 groups $(whoami)
-````
+```
 Your user will need to be a member of the group as we will run the programs through sg 
 
 ### Creating the Systemd Service
 Next we will create a systemd service which uses iptables to drop outbound connections made by the "no-internet" group
-```
+``` bash
 touch /etc/systemd/system/no-internet.service
 nano /etc/systemd/system/no-internet.service
 ```
 Enter the following within the service file then write and quit
-```
+``` bash
 [Unit]
 Description=Drops outbound Internet traffic for the group "no-internet"
 
@@ -78,13 +78,13 @@ Breakdown of iptables command:
 - the -j DROP flag specifies the action to take, in this case dropping the packets
 
 Next we will reload our systemctl services, and enable no-internet so it persistently starts at boot
-```
+``` bash
 systemctl daemon-reload
 systemctl enable --now no-internet.service
 ```
 
 Note: a similar effect could be achieved via cron by making an entry along the lines of
-```
+``` bash
 @reboot  root  iptables -I OUTPUT 1 -m owner --gid-owner "no-internet" -j DROP
 ```
 ### Modifying .desktop entries
@@ -98,13 +98,13 @@ They are typically located within ~/.local/share/applications
 An example of a program which I want to deny network access to due to its persistent and bothersome connections is Lutris
 
 Before modification it's Exec value will likely look something like
-```
+``` bash
 Exec=/usr/bin/lutris
 ```
 However we are going to modify this so it runs under the group "no-internet" any time it is launched, thereby having outbound connections dropped
 
 This may be achieved by changing the line like so:
-```
+``` bash
 Exec=/usr/bin/sg no-internet -c /usr/bin/lutris
 ```
 Note: your binaries may be located in a different place, type "which [program_name]" or "type [program_name]" into the terminal to find their path