Egress Rules

An egress rule controls outbound network traffic from a source to a specified destination based on defined protocols and IP ranges.

Whether a network starts with working outbound access depends on how it was created.

When a VM is deployed with a network plan, through the portal, zcp instance create --network-plan, or the provider’s network_plan argument, the platform provisions the network with outbound access already working. You do not need to add anything.

A network you create as its own resource, through zcp network create or the zcp_network Terraform resource, starts with no egress rules and blocks all outbound traffic. VMs on it cannot reach package archives, container registries, or any other internet host until you add rules. The symptom is every outbound command timing out while the VM is otherwise healthy and reachable over SSH.

Check which situation you are in:

zcp egress list --network <network-slug> --region <region-slug>

In the Egress Rules tab, view all current egress rules.
Click Add Egress Rule to open the rule configuration form.

Egress Rules tab listing outbound rules with the Add Egress Rule button

Add a New Egress Rule

Enter the Source CIDR and Destination CIDR.
Choose protocol: TCP, UDP, ICMP, or All.
Click Add Egress Rule.