Networking

IPv4

There are 2 generally available external networks, which you can allocate floating IP addresses (FIPs) from:

• external-ipv4-general-public (recommended)
  • This network has address pool 195.113.243.0/24.
  • FIPs from this network are publicly accessible.

Personal Projects

Due to limited resources available in personal projects, the easiest way is to connect your instances to the shared internal network:

• internal-ipv4-general-private

From this network, you will be able to allocate a floating IP address from the external network:

• external-ipv4-general-public

Group Projects

By default, group projects are provided with a default internal network:

• group-project-network (192.168.0.0/24)

This network already has a route to the recommended external network external-ipv4-general-public, which means you can associate FIPs from this external network to instances connected to the default internal network.

You may also use the internal-ipv4-general-private internal network with the same effect.

In case you create your own internal network (see Create Networking How-to Guide), you need to handle the routing yourself, i.e. create a new router (see Create Router How-to Guide), if you want to assign FIPs from an external network to your instances.

Security groups

Apart from the default security group, every project in the OpenStack cloud also contains pre-generated security group ssh. Rules of the ssh groups enable access to virtual servers via SSH protocol (IPv4+IPv6).