Update README.md

SecureSystem/README.md

@@ -81,60 +81,10 @@ check if service has been started successfully
 
 ```systemctl status sshd```
 
-## Configure Fail2Ban
+## Configure SSH key auth (Unix Systems)
-
-install fail2ban
-
-```apt-get install fail2ban```
-
-enable fail2ban
-
-```systemctl enable fail2ban```
-
-create a backup of the old config just in case
-
-```cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local```
-
-edit the config file
-
-```vim /etc/fail2ban/jail.local```
-
-```bash
-...
-bantime.increment = true
-...
-bantime.multipliers = 1 2 4 8 16 32 64
-...
-bantime  = 300m
-...
-findtime  = 10m
-...
-maxretry = 3
-
-[sshd]
-...
-enabled = true
-port    = 29
-logpath = %(sshd_log)s
-backend = %(sshd_backend)s
-...
-```
-restart fail2ban
-
-```systemctl restart fail2ban```
-
-check the status of fail2ban
-
-```systemctl status fail2ban```
-
-check the status of the client
-
-```fail2ban-client status sshd```
 
 **-- Logout from Server --**
 
-## Configure SSH key auth (Unix Systems)
-
 **following steps are executed on the local system - NOT on the server**
 
 create a ssh key with Edwards-curve Digital Signature Algorithm and name it server in the .ssh folder of the current user
@@ -216,18 +166,78 @@ check if service has been started successfully
 
 ```sudo systemctl status sshd```
 
+## OPTIONAL Configure Fail2Ban
+
+install fail2ban
+
+```apt-get install fail2ban```
+
+enable fail2ban
+
+```systemctl enable fail2ban```
+
+create a backup of the old config just in case
+
+```cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local```
+
+edit the config file
+
+```vim /etc/fail2ban/jail.local```
+
+```bash
+...
+bantime.increment = true
+...
+bantime.multipliers = 1 2 4 8 16 32 64
+...
+bantime  = 300m
+...
+findtime  = 10m
+...
+maxretry = 3
+
+[sshd]
+...
+enabled = true
+port    = 29
+logpath = %(sshd_log)s
+backend = %(sshd_backend)s
+...
+```
+restart fail2ban
+
+```systemctl restart fail2ban```
+
+check the status of fail2ban
+
+```systemctl status fail2ban```
+
+check the status of the client
+
+```fail2ban-client status sshd```
+
 ## OPTIONAL Install UFW Firewall
 
-```sudo apt-get install ufw```
+```sudo su```
 
-allow SSH if you are using a remote connection
+```apt-get install ufw```
 
-```sudo ufw allow ssh```
+allow SSH (or port 29 like in the config earlier) if you are using a remote connection
+
+```ufw allow ssh```
+
+or
+
+```ufw allow 29/tcp```
 
 check the status of the firewall (should be off)
 
-```sudo ufw status verbose```
+```ufw status verbose```
 
 turn the firewall on
 
-```sudo ufw enable```
+```ufw enable```
+
+check the status of the firewall (should be on)
+
+```ufw status verbose```