docs: updated readme

README.md

 # Virtual Machine for VPN setup
 
-Configure a virtual machine to connect to a VPN (FortiNet) through a proxy
-
-## Requirements
-
-- `FortiClient` backup file with `.conf` extension.
+Configure a virtual machine to connect to a VPN (FortiNet) through a proxy for Linux systems
 
 ## References
 
@@ -12,25 +8,13 @@ Configure a virtual machine to connect to a VPN (FortiNet) through a proxy
 - [dev.to](https://dev.to/sannae/setting-up-windows-virtual-test-environments-with-vagrant-4k1b)
 - [Vagrant Boxes](https://portal.cloud.hashicorp.com/vagrant/discover)
 
-## Setup
-
-### Vagrant
-
-> Steps from [developer.hashicorp.com](https://developer.hashicorp.com/vagrant/install)
-
-Install Vagrant in Ubuntu/Debian distros:
-
-```sh
-# Add official repository
-wget -O - https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
-echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
-# Install vagrant
-sudo apt update && sudo apt install vagrant
-```
+## Requirements
 
-### VirtualBox
+- `FortiClient` backup file with `.conf` extension.
+- [VirtualBox](https://www.virtualbox.org/wiki/Downloads)
+- [Vagrant](https://developer.hashicorp.com/vagrant/install)
 
-Install VirtualBox from [here](https://www.virtualbox.org/wiki/Downloads)
+## Setup
 
 ### Run the virtual machine
 
@@ -53,7 +37,41 @@ Copy your `FortiClient` backup file in `./files` folder and follow these steps:
 
 #### Add proxy in host
 
-Add the automatic proxy file `http://192.168.56.10:8080/proxy.pac` in your network settings or web browser.
+Add the automatic proxy file `http://192.168.56.10:8080/proxy.pac` in your network settings and/or web browser.
+
+#### Add proxy in git
+
+> Steps from [here](https://gist.github.com/evantoli/f8c23a37eb3558ab8765)
+
+Add proxy in git for private git server.
+
+```sh
+# Add proxy by git server domain or IP
+GIT_PRIVATE_SERVER=http://192.168.11.78
+PROXY_SERVER=http://192.168.56.10:3128
+git config --global "http.$GIT_PRIVATE_SERVER.proxy" $PROXY_SERVER
+# Check global configuration
+cat ~/.gitconfig
+```
+
+#### Add proxy in NMAP
+
+```sh
+nmap --proxies http://192.168.56.10:3128 $PRIVATE_DOMAIN_OR_IP
+```
+
+#### Add proxy for SSH connection
+
+> `corkscrew` required
+
+```sh
+# Install corkscrew (in Debian-based distributions)
+sudo apt -y install corkscrew
+# Install sshpass password provider for plain text data
+sudo apt -y install sshpass
+```
+
+Copy and modify the bash scripts [here](src/scripts/bash/).
 
 ## Useful commands