Guide How To Run Your L2OFF Server on Linux

[Trance]

Hi,

I think it's a huge advantage if you run the L2OFF server on a VM on a Linux machine - Ubuntu Server 22.04.
Let me know if you have any suggestions that can improve this guide.
For the past few weeks I've been creating all sorts of sh or python scripts at work for Linux. So I thought I'd make this guide.

 

INSTALL VIRTUALBOX
 

sudo apt-get update
sudo apt-get install virtualbox

 

Download the Windows ISO file for the version of Windows you want to install on your virtual machine.
We'll use Windows 10 as an example here.
 

Create a new virtual machine using the following command:
 

VBoxManage createvm --name "VM name" --ostype Windows10 --register

 

Replace "VM name" with the name you want to give your virtual machine.

Configure the virtual machine using the following commands:
 

VBoxManage modifyvm "VM name" --memory 2048 --vram 128
VBoxManage modifyvm "VM name" --boot1 dvd --boot2 disk --boot3 none --boot4 none
VBoxManage modifyvm "VM name" --nic1 nat
VBoxManage modifyvm "VM name" --natpf1 "guestssh,tcp,,2106,,2106"
VBoxManage modifyvm "VM name" --natpf1 "guestssh,tcp,,7777,,7777"

 

Replace "VM name" with the name of your virtual machine.

Create a virtual hard disk for your virtual machine using the following command:
 

VBoxManage createhd --filename "/path/to/harddisk.vdi" --size 20480

 

Replace "/path/to/harddisk.vdi" with the path where you want to store the virtual hard disk.

Attach the Windows ISO file to the virtual machine using the following command:
 

VBoxManage storageattach "VM name" --storagectl IDE --port 0 --device 0 --type dvddrive --medium "/path/to/windows.iso"

 

Replace "VM name" with the name of your virtual machine, as specified, and replace "/path/to/your/motherfucking/windows.iso" with the path to the Windows ISO file you downloaded.

Start the virtual machine using the following command:
 

VBoxHeadless --startvm "VM name"

 

Replace "VM name" with the name of your virtual machine.

Windows will now boot from the ISO file you selected. Follow the on-screen instructions to install Windows.

Once Windows is installed, you can install VirtualBox Guest Additions to improve performance and add features like shared folders. In the virtual machine, navigate to the "Devices" menu and select "Insert Guest Additions CD image".

In Windows, open "This PC" and navigate to the CD drive. Run the "VBoxWindowsAdditions.exe" file to install Guest Additions.

TRAFFIC FORWARDING
 

To forward incoming TCP connections on ports 2106 and 7777 to your Windows virtual machine on Ubuntu Server, you can use NAT and port forwarding.
 

Make sure your Windows virtual machine is shut down.

Open a terminal window on your Ubuntu Server.

Use the following command to list the network interfaces on your server:
 

ip addr

 

Identify the IP address of the network interface you want to use for the port forwarding. It will be listed under the "inet" section.

Use the following commands to forward port 2106 to your Windows virtual machine:
 

VBoxManage modifyvm "VM name" --natpf1 "guestssh,tcp,,2106,,2106"

 

Replace "VM name" with the name of your Windows virtual machine, as specified in VirtualBox.

Use the following commands to forward port 7777 to your Windows virtual machine:
 

VBoxManage modifyvm "VM name" --natpf1 "guestssh,tcp,,7777,,7777"

 

Replace "VM name" with the name of your Windows virtual machine, as specified in VirtualBox.

Start your Windows virtual machine.

In Windows, configure your applications to listen on ports 2106 and 7777, and they will now receive incoming connections that are forwarded from your Ubuntu Server.

USE MORE RESOURCES

You can configure your Windows virtual machine in VirtualBox to use all available CPU cores and all available RAM on your Ubuntu Server.
 

Make sure your Windows virtual machine is shut down.

Open a terminal window on your Ubuntu Server.

Use the following command to set the number of CPU cores that your virtual machine will use:
 

VBoxManage modifyvm "VM name" --cpus $(nproc)

 

Replace "VM name" with the name of your Windows virtual machine, as specified in VirtualBox.

Use the following command to set the amount of RAM that your virtual machine will use:
 

VBoxManage modifyvm "VM name" --memory $(free -m | awk '/^Mem:/{print $2}')

 

Replace "VM name" with the name of your Windows virtual machine, as specified in VirtualBox.

Start the virtual machine.

That's all, I think.

You can make the virtual machine have a different IP if you buy additional IPs from OVH.

Edited February 14, 2023 by Trance

[Maxtor]

Good job!

[SevenSins]

And what are the benefits to run and l2off server on Linux?

[rlfem123]

That's like a tutorial on how to run l2 on MacOS Xd but good job for the investigation.