How to disable ESXi firewall

If you want to disable the esxi firewall service for some reason, you can disable it with the command below.
 
esxcli network firewall set --enabled false
 
Note that when you stop this service, esxi services are opened to the outside world. so re-enable it after making the necessary changes.

How to Enable SNMPD on ESXi 6.5, 6.7

Running the below steps listed at the above link allowed me to start SNMPD in the EXSi GUI without issue

esxcli system snmp set -r
esxcli system snmp set -c YOUR_STRING
esxcli system snmp set -p 161
esxcli system snmp set -L "City, State, Country"
esxcli system snmp set -C [email protected]
esxcli system snmp set -e yes
You can change the bolded sections according to your wishes.

How to install a Ubuntu 16.04 LTS (Xenial Xerus)

1. Requirements

To install a Ubuntu LTS Server, you will need the following prerequisites:

2. Preliminary Note

In this tutorial, I use the hostname server1.example.com with the IP address 192.168.1.100 and the gateway 192.168.1.1 These settings might differ for you, so you have to replace them where appropriate.
 

3. The Base System

Insert your Ubuntu install CD into your system and boot from it. When you install the OS in a virtual machine like I do it here, then you should be able to select the downloaded ISO file as source for the CD/DVD drive in VMWare and Virtualbox without burning it on CD first.
The first screen will show the language selector. Plese select your language:
Select the installation language
Then choose the option Install Ubuntu Server:
Choose to install Ubuntu Server
Select the language for the installed Operating System:
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How to Install Ubuntu 18.04 (Bionic Beaver)

Introduction

Ubuntu 18.04 (codenamed Bionic Beaver) is a free, open-source distribution of Linux, based on the Debian operating system. 18.04 was released in April 2018 and it is an LTS (long-term support) version publicly supported until 2023.
In 2020, Ubuntu 18.04 was succeeded by Ubuntu 20.04 as the latest LTS version.
In this tutorial, you will learn how to install Ubuntu 18.04. 

Prerequisites

  • 2 GHz dual-core processor, at least
  • 4 GB system memory
  • 25 GB of free space on the hard drive
  • A DVD drive or USB port

Step 1: Download Ubuntu 18.04 ISO File

Before you start, make sure you have read the prerequisites, and you have all the recommended system requirements. If you are confident that your system can support the new OS installation, take the first step, and download Ubuntu 18.04.
1. Open a browser of your choice and navigate to the Ubuntu 18.04 official download page.
2. You will see two available packages – Ubuntu 18.04 for Desktop and Ubuntu 18.04 for Server.
We shall download and install the desktop version.
3. Select the 64-bit PC (AMD64) desktop image link to start downloading the package.

Click the 64-bit PC (AMD64) desktop image link to download Ubuntu for Desktop.

4. It will take a couple of minutes to download the .iso file. Once it is done, move on to creating a bootable USB or DVD.

Step 2: Create a Bootable USB

The next step is to create a way to transfer the installation package to your system. You will want your computer to boot from the USB on which the package is on. To do that, you need to create a bootable USB.
This process requires at least a 2GB flash drive and software that creates bootable USB flash drives. There are many options to choose from (RufusUUIUNetbootinPowerISO, and so on).
For this example, we are going to use Rufus, as it is much faster than the alternatives out there. It is also free and open-source.
1. Download Rufus from the official website. Navigate to the webpage and scroll down to the Download section.

Select option to download Rufus bootable.

2. You will find a list of the latest updated versions. Today, these include Rufus 3.5 and Rufus 3.5 Portable or other available versions. Click on either one of the first two, choose to Save and then Run the file.
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