Gilang Virga Perdana gilangvperdana

General

If you want to port forwarding use windows server, you can use netsh command. for now it's compatible just for TCP (not UDP).

Show existing rule

netsh interface portproxy show all

Delete Existing Configuration

General

If you face when you want to RDP to your Windows Server 2019 like this, The remote session was disconnected because there are no Remote Desktop License Servers available to provide a license. Please contact the server administrator.

You can follow this guide for Reset Trial Days

FYI

Tested by me on Windows Server 2019

General

If you want to download offline package on your Linux you can use this command

1

apt-get --print-uris install package_name

will give you a list of urls for packages you need to download.

2

How to secure a Proxmox exposed host

When you look for tutorials on how to install Proxmox, it always stops after the initial installation - which is quite dangerous, since it leaves a Proxmox host being exposed to the internet while listening to Ports 22 and 8006.

Heck, there is not even any SSH-hardening covered - your SSH is typically set to default values, which means: Password-authentication with the root account is perfectly possible. While you can mitigate some of these things by harding SSH or by installing fail2ban (which we will do anyhow), the host still exposes ports 22 and 8006.

For a secure system, these ports (and actually, apart from one single port ANY ports) have to be disabled. The only acceptable management access to the system should either happen via a Jumpserver or - if not available - via a direct VPN-connection.

In this gist, you find all the required steps to secure your Proxmox exposed host. This gist should work for any Proxmox host with - say - Hetzner, OVH or other vendor

General

If you want to overwrite your /etc/resolv.conf configuration with Netplan configuration you can follow this step.

Remove & Link

sudo rm /etc/resolv.conf
sudo ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf

Reference

General

If you want to create an mountpoint with Volume Group you can follow this step.

Topology

Case

We have 2 disk (/dev/sdb & /dev/sdc)
We want to combine that 2 disk to one Mountpoint (/mnt)
We want to dynamicly extend that disk if we have a new disk

General

If you need dhclient spesific interface every VM booting you can try this workaround

Workaround

for Example spesific interface on this workaround are ens18

Create this script

sudo nano /etc/init.d/dhclient-ens18

General

This is just all about virtualbox workaround

Change UUID of VDI Disk

https://www.groovypost.com/howto/virtualbox-error-uuid-hard-disk/

Convert QCOW2 to VDI (for Import to VBox)

https://gist.github.com/mamonu/671038b09f5ae9e034e8

Check Health of QCOW2

General

If you have a server then you want to virtualize your GPU card, lets follow this workaround.

Tested on

Windows Server 2022
RHEL
Ubuntu

Driver on VMHost

Make sure you have installed driver on your VMHost, you can download on nvid.nvidia.com

	# Install tmux 2.8 on Centos

	# install deps
	yum install gcc kernel-devel make ncurses-devel

	# cd src
	cd /usr/local/src

	# DOWNLOAD SOURCES FOR LIBEVENT AND MAKE AND INSTALL
	curl -LO https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/libevent-2.1.8-stable.tar.gz