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It is possible to create multiple firewalls in Openstack, so that they can be tailored to each and every application. For now we are just going to modify the default firewall to allow incoming SSH traffic. Click the "Manage Rules" button.
There are 4 firewall rules which are present by default, and these rules allow outgoing traffic both for IPv4 and IPv6 and incoming traffic from other hosts using the same security group. These default settings would thus allow your virtual machines to communicate with each other in addition to accessing the internet. No incoming traffic is allowed per default. Click on the "Add Rule" button to add a new rule.
To allow incoming SSH traffic, create a custom TCP Rule for the Ingress traffic destined for port 22:
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To have openstack create a keypair for you, click the "Create Key Pair" button.
Give the key a suitable name
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