Article overview

Help article

What is HA-IP?

HA-IP is a ‘highly-available’ IPv4- and IPv6 address that allows you to forward TCP-traffic to a single BladeVPS. As this IP-address is located ‘outside’ of your VPS(es), you can always refer this address to any VPS of choice.

When, for instance, your VPS has to go down because of temporary maintenance or to restore a back-up, you can make a clone of your VPS which enables you to set your HA-IP to your new VPS. This allows you to perform any actions on your original VPS, without having any impact to the users of that server.

Can I let my HA-IP execute a failover automatically?

It is not possible to set an ‘automated’ failover through your control panel with HA-IP basic, but you can do so with HA-IP Pro, see this article. Through our API, it is possible to configure an automated failover for HA-IP basic as well. It does however require quite some active monitoring (like our TCP-monitoring) and programming skills to make use of our API. You can consult the API documentation for some examples of solutions.

Adjust your HA-IP name
Change the name of your HA-IP

Yes, you can adjust the name of your HA-IP, just like your VPS or private network. In order to do so, go to your control panel, select your HA-IP under 'BladeVPS'. Then, click the 'Manage' in the upper-right corner and select 'Change Name'.

What kind of traffic does the HA-IP send through?

With the default TransIP settings, only traffic destined for port 80 and 443 will pass through HA-IP. All other traffic will be rejected by our firewall, unless you have add that specific port. Please make sure not to let your traffic run to your HA-IP unless you have correctly set the port for this. You can not have your HA-IP forward any UDP traffic. The modes of traffic you can use are:

  • HTTP
  • TCP
  • Proxy

How do I configure my HA-IP?

You can specify which traffic is sent to your HA-IP and which traffic is sent to your VPS. In this Knowledge Base-article the different modes are explained.

ha-ip tcp port settings

For securing the connection between HA-IP and your VPSes you can choose one out of three SSL methods:

ha-ip tcp port settings ssl options



Traffic between HA-IP and your VPSes will be forwarded without encryption.


SSL must be configured on your VPSes. Self-signed certificates are allowed.


SSL must be configured on your VPSes. Certificates must be signed by a trusted certificate authority.

IPv6 configuration

You can choose if and how you’d like to forward your IPv6 traffic to your VPS’es:

ha-ip ipv6 configuration

IPv6 enabled

Forward all your IPv6 traffic to the IPv6 address of your connected VPSes.

IPv6 disabled

Accept only IPv4 traffic on your HA-IP and forward it to your connected VPSes.

Redirect IPv6 to IPv4

Accept all IPv4 and IPv6 traffic on your HA-IP and forward the IPv6 traffic as IPv4 traffic to the connected VPSes.

Reverse DNS
Change the PTR-record of your HA-IP You can change the reverse DNS in the control panel below the header 'Reverse DNS'. Select Change DNS in order to enable the option. After that you can set the desired reverse DNS.

Please note! A valid reverse DNS has to be a FQDN (Fully Qualified Domain Name)! An good example is ''. Not correct is for example 'haip-server'.

Can I choose or adjust the IP-address of my HA-IP?

  • At the moment, the allocation of IP-addresses is being performed automatically (just like this is the case for a BladeVPS). Therefore, it is currently not possible to choose or adjust a (HA-)IP address. The IP's which HA-IP can use are from specific ranges.
  • You can not transform an existing IP from an active or cancelled VPS to a 'HA-IP'. As stated above the IP's HA-IP uses are from specific ranges.
  • Your HA-IP will direct to the primary IP-address of the designated VPS. Linking to a different IP-address on a VPS is a feature which we are looking into to implement.


Should you have any questions left regarding this article, do not hesitate to contact our support department. You can reach them via the ‘Contact Us’ button at the bottom of this page.

If you want to discuss this article with other users, please leave a message under 'Comments'

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