Creating a Virtual Cloud Network

Create a virtual cloud network (VCN) to use in this environment.

1. Select [≡] > Networking > Virtual cloud network.
   

2. Select the compartment sios20-c created in the previous step in Compartment, then click Create VCN.
   

3. Enter the following value in the displayed form and click Create VCN.

4. You can see that the sios20-vcn virtual cloud network has been created.
   

The OCI resources to be created in the created VCN are described below.

Creating an Internet Gateway

1. Open the created sios20-vcn details page and click Internet Gateways > Create Internet Gateway.
   

2. Enter the following values in the form that appears and click Create Internet Gateway.

3. Check in the list that sios20-igw has been created.
   

Next, create other resources in the same way you created the internet gateway.

Creating a NAT gateway

On the sios20-vcn details page, click NAT Gateways > Create NAT Gateway, enter the values in the form that appears, and click Create NAT Gateway.

Creating a service gateway

On the sios20-vcn details page, click Service Gateways > Create Service Gateway, enter the values in the form that appears, and click Create Service Gateway.

Editing/creating a security list

Configure the following two security lists:

• Default Security List for sios20-vcn (Edit an automatically generated list when creating a VCN)
• sios20-sl (Create a new list)

Editing Default Security List for sios20-vcn

1. On the sios20-vcn details page, select Security Lists and click Default Security List for sios20-vcn in the list.
   

2. On the Default Security List for sios20-vcn details page, select Ingress Rules, then select all records in the list and click Remove. Confirm that the record has been removed from the list.
   

3. On the Default Security List for sios20-vcn details page, click Ingress Rules > Add Ingress Rules.
   

4. In the form that appears, create a record as follows.

5. On the Default Security List for sios20-vcn details page, select Egress Rules, select the only record in the list and click Edit.
   

6. Edit the record in the form that appears (Edit only the Destination CIDR field).

Creating sios20-sl

1. On the sios20-vcn details page, click Security List > Create Security List.
   

2. Enter the following values in the form that appears and click Create Security List.

Creating a route table

Configure the following two route tables:

• Default Route Table for sios20-vcn (Edit an automatically generated table when creating a VCN)
• sios20-rt (Create a new table)
  

Editing Default Route Table for sios20-vcn

1. On the sios20-vcn details page, select Route Tables, then select Default Route Table for sios20-vcn in the list.
   

2. On the Default Route Table for sios20-vcn details page, click Route Rules > Add Route Rules.
   

3. Create a record by entering the following in the form that appears.

Creating sios20-rt

1. On the sios20-vcn details page, click Route Tables > Create Route Table.
   

2. Enter the values as follows and click Create.

Creating subnets

Create the following three subnets.

• sios20-subnet1 (Public)
• sios20-subnet2 (Private)
• sios20-subnet3 (Private)
  Follow the steps below to create subnets.
  

1. On the sios20-vcn details page, click Subnets > Create Subnet.
   

2. Enter values in the form that appears and click Create. Enter the following values for each of the three subnets.