Catalyst Networks
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Security Groups

Overview

Security groups define firewall rules that control traffic between nodes in your Nebula network. Each organization can have multiple security groups, and each node can be assigned to one or more groups.

Creating a Security Group

Navigate to your organization’s Security Groups page and click Create Group. Define:

  • Name — A descriptive name (e.g., “web-servers”, “database-tier”)
  • Inbound rules — Which ports and protocols to allow from other nodes
  • Outbound rules — Which traffic nodes in this group can initiate

Rule Format

{
  "direction": "inbound",
  "protocol": "tcp",
  "port": "443",
  "source": "any"
}

Applying Groups to Nodes

Assign security groups when creating a node, or update them later from the node detail page. Changes propagate to the node’s Nebula configuration immediately.