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Enable private networking Vultr – Steps to follow

by | May 23, 2021

Wondering how to Enable private networking Vultr? We can help you.

Vultr provides several flexible networking options for cloud servers.

In addition to the public network attached to every Vultr instance, we can configure up to five private networks per location. Private networks help instances within a location to communicate without exposing the traffic to the public internet.

Here at Bobcares, we handle requests from our customers using Vultr to fix similar issues as a part of Server Management Services.

Today, let us see how our Support techs do this for our customers.

How to Enable private networking Vultr

Following are the steps that our Support Engineers follow to enable private networking on Vultr for our customers.

1. Creating a Private Network

Generally, we can create up to 5 private networks per location. Private networks will not be able to communicate between locations, regardless of IP addressing. For example, server instances in Miami can not see private networks in Dallas.

Following are the steps with which we can create a network:

1. First, navigate to the Network tab.

2. Then select the Private Networks menu item.

3. And click the blue plus icon.

4. Then choose Add Network.

Enable private networking vultr



5. And select a location.

6. After that Add description.

7. Next we have to accept the suggested IP network address range or supply our own.

8. Finally click Add Network.

Enable private networking vultr

Once we complete the creation of a private network, we can assign it to an instance.

2. Assigning Private Network to an Instance

A portion of the IPv4 Settings screen for an example instance is shown below.

We use Manage (1) to create a private network.

For detaching a private network from an instance, we can use the trashcan icon (2).

And for adding a private network to an instance, we can select the network (3) and click Attach Network (4)

The server will reboot to activate the network adapter.

enable private networking vultr

3. Managing Private Networks via API

The Vultr API offers several endpoints to manage private networks. Following are a few of them:

Manage a network
  1. Create a new private network in a region.
  2. Get information about a private network.
  3. Update information for a private network.
  4. Delete a private network.
List all networks
  1. Get a list of all private networks in your account.
Manage private networks for an instance
  1. List the private networks for an Instance.
  2. Attach a private network to an instance.
  3. Detach a private network from an instance.

Configuring a Private Network on Ubuntu 17.10 through 20.04

For this set up we need to verify that private networking is enabled on our cloud server. The private network device is ens7 and the public network device is ens3 in the below example.

Following are the steps we can use for creating the private network:

  1. Firstly we need to find the MAC address of the ens7 adapter. For this we can use the following command:
    # ip addr
  2.  After that we need to look for the link/ether value of adapter ens7, as in the example below (00:00:00:00:00:00):
    3: ens7: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
        link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
  3. Then populate /etc/netplan/10-ens7.yaml with the following text.
      version: 2
      renderer: networkd
            macaddress: 00:00:00:00:00:00
          mtu: 1450
          dhcp4: no
          addresses: []

We can either update networking or reboot the server.

# netplan apply

Configuring a Private Network on CentOS 8

  1. Firstly, we need to verify that private networking is enabled on our cloud server. The private network device is ens7 and the public network device is ens3.
  2. Then edit /etc/sysconfig/network-scripts/ifcfg-ens7
    # nano /etc/sysconfig/network-scripts/ifcfg-ens7
  3. After that change to the selected private IP address and replace the contents of ifcfg-ens7 with:
  4. Finally, restart the connection or reboot.
    # nmcli con load /etc/sysconfig/network-scripts/ifcfg-ens7
    # nmcli con up 'System ens7'

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In short, we saw how our Support Engineers enable private networking vultr for our customers.


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