Linux Static IP Configuration

How to Access IP address Remote?

Address / January 7, 2019

The Reverse DNS linkUse promo code DOCS10 for $10 credit on a new account.

The Remote Access section of the Linode Manager contains important network settings for your Linode. Use this tab to find your IP address, set the reverse DNS, configure IP failover, and swap IP addresses with another Linode. You can also access the Linode Shell (Lish) console to remotely connect to your Linode and troubleshoot problems.

Network Access

The Network Access section provides access to the settings for reverse DNS, IP failover, and swapping IP addresses. It also displays your Linode’s IP addresses, default gateways, and DNS resolvers.

Setting Reverse DNS

The ability to associate an IP address with a domain name is referred to as forward DNS resolution. Reverse DNS lookup is the inverse process, where an IP address resolves to its designated domain name. Official Internet documents state that “every Internet-reachable host should have a name, ” and that the name should match a reverse pointer record. (See RFC 1033 and RFC 1912.)

Adding the domain name for reverse DNSHere’s how to set reverse DNS for your domain names:

  1. Click the Linodes tab.
  2. Select your Linode. The Linode’s dashboard appears.
  3. Click the Remote Access tab.
  4. Select the Reverse DNS link, as shown in the below image.
  5. Enter a domain name in the Hostname field, as shown in the below image.
  6. Click Look up. A message appears indicating that a match has been found for both your IPv4 and IPv6 addresses.
  7. Click Yes beneath the desired address. Note that you can select only one address at a time. If you want to set up reverse DNS for both the IPv4 and IPv6 addresses, you can perform another lookup and select the other address.
  8. Repeat steps 1-8 for every other domain name you host on your Linode.

Reverse DNS Match foundYou have successfully configured reverse DNS.

If you receive the message that no match was found, this indicates that you need to update the forward DNS for this domain. Make sure the domain or subdomain in question resolves to the IP address for which you are trying to set the reverse DNS. If you’ve recently made a DNS change, you may need to wait 24-48 hours for it to propagate.

Resetting Reverse DNS

To reset reverse DNS to the Linode domain, which will be something like, follow these instructions:

  1. Select the Reset link next to the reverse DNS setting you want to revert to the default Linode domain.
  2. Click Yes when asked to confirm the reset.

You’ll see a confirmation message that the reverse DNS has been reset.

Configuring IP Failover

Configuring IP failoverIP failover is the process by which an IP address is reassigned from one Linode to another in the event the first one fails or goes down. If you’re using two Linodes to make a website highly available with Keepalived or a similar service, you can use the Linode Manager to configure IP failover. Here’s how:

  1. Click the Linodes tab. A list of your available nodes will appear.
  2. Select the Linode on which you wish to configure failover. The Linode’s dashboard appears.
  3. Select the IP Failover link. The webpage shown below appears.
  4. Select the checkboxes of all IP addresses that need to fail over to the chosen Linode.
  5. Click Save Changes.

You have successfully configured IP failover. Now, when a failover service such as Keepalived detects failure of your chosen Linode, its IP address will be assigned to the new Linode to avoid an interruption in service. For more information on a practical use case, see our guide on hosting a website with high availability.

Networking Restrictions

Linode’s philosophy is to provide a plain Internet connection to every customer. We also implement some networking restrictions to prevent malicious activity and the abuse of our service.

Adding the domain name for Reverse DNS Adding Private IP addresses