Security groups

Security groups, like firewalls, help you control the incoming and outgoing network traffic for your instances.

You can define separate rules for inbound and outbound traffic. Nebula provides fine-grained control over allowed or restricted connection types, protocols, port ranges, and even source and destination IP addresses.

Inbound rules

Inbound rules are defined to control incoming traffic to your resources. To define an inbound rule, you need to specify the following:

  • Type: This specifies the type of IP traffic, i.e., IPv4 or IPv6.
  • Protocol: Defines the type of traffic like TCP, UDP, ICMP, etc.
  • Port range: Specific ports or a range of ports (e.g., 22 for SSH, 80 for HTTP).
  • Source: The IP address or CIDR block where the traffic is coming from.

By default, a new security group blocks all incoming traffic until you change its inbound rules.

Outbound rules

Outbound rules control the outgoing traffic from your resources. To define an outbound rule, you need to specify the following:

  • Type: This specifies the type of IP traffic, i.e., IPv4 or IPv6.
  • Protocol: Defines the type of traffic like TCP, UDP, ICMP, etc.
  • Port range: Specific ports or a range of ports (e.g., 22 for SSH, 80 for HTTP).
  • Destination: The IP address or CIDR block where the traffic is going.

By default, a new security group allows all outgoing traffic until you change its outbound rules.

Next steps

Need help?

If you have any technical questions or encounter any problems, get in touch with our Support team! We are here to help, and will provide support if you encounter any issues with NebCompute.

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