What do you know about Network Security Group(NSG) in Azure?
Group of network security rules is nothing but NSG
Create a network security group with rules to filter inbound traffic to, and outbound traffic from, virtual machines and subnets.

What do you know about the network security Rule?
To allow or disallow inbound and outbound traffic.

The most commonly used ports to allow or disallow in the NSG are follows.
RDP 3389(To connect to Windows machines)
SSH 22(To connect to Linux machines)
HTTP 80(To connect to web-based application)
HTTPS 443(To connect to secured web-based application)
TCP 1433(To connect to SQL Server Database)
Ports range(11000-11999) is a newly added addition allowing connection to SQL Server Database.

Creation of VM Hierarchy
1st Create RG
2nd Create VNet
3rd Create Subnet
4th Create NSG
5th Create VM

What do you know about Network ID & Broadcast ID IP Range?
Assume that I have created VNet(10.10.0.0/16) with subnet(10.10.1.0/24)
First, four IP's are allocated to Network ID's, and the last IP is assigned to the Broadcast ID
We get only 251 IP Addresses to give to Virtual Machines.
10.10.1.4 is the starting IP as all the initial ones are reserved IP's

What do you know about Public IP & Private IP?
Public IP is nothing but access from outside (Internet to VM)
Private IP is nothing but internal access (VM to VM)

We have two options to allow/disallow ports?
One is from VM Networking & the other one is from NSG Inbound and outbound
At an Enterprise level, we use only NSG to allow/disallow the traffic.

How to install the Nginx web server on a Linux machine?
Use the below commands one by one in the sequence
sudo su -
apt update -y
apt install nginx -y

What do you know about priority value?
Usually, less priority numbers have more preference, and high priority numbers have less importance.

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Posted in: Azure | ID: Q80 |
January 25, 2022, 07:55 AM | 0 Replies