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Documentation Index

Fetch the complete documentation index at: https://docs.xloud.tech/llms.txt

Use this file to discover all available pages before exploring further.

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Overview

Security groups act as virtual firewalls that control inbound and outbound network traffic for instances. Each instance port can have one or more security groups assigned. Security group rules apply to all traffic on that port.
Prerequisites
  • An active instance with at least one network interface
  • Existing security groups with configured rules
  • For creating security groups, see Network Security Groups

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Manage Security Groups on an Instance

1

Open the Manage Security Group dialog

Navigate to Compute > Instances. Click the More dropdown on the instance row, then select Manage Security Group under the Related Resources group.
This action is always available regardless of instance status. No lock check is required.
2

Select a port

The dialog shows:
FieldDescription
InstanceCurrent instance name (read-only)
PortSelect the network interface to configure (required)
The port table shows all instance interfaces with:
ColumnDescription
IDPort identifier
Network NameNetwork the port belongs to
IPv4 AddressAssigned IPv4 address
IPv6 AddressAssigned IPv6 address
MAC AddressHardware address
StatusPort status
Ports with port security disabled cannot have security groups assigned. These ports are shown as disabled in the selection table.
3

Select security groups

After selecting a port, the Security Group table loads with the port’s current security groups pre-selected.Add or remove security groups by toggling the checkboxes. Multiple security groups can be assigned to a single port.Click Confirm to apply the changes.
Security group assignment updated for the selected port.

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View Instance Security Groups

Navigate to Compute > Instances and click the instance name. Go to the Security Groups tab to view all security groups assigned to each interface.

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Next Steps

Network Security Groups

Create security groups and configure inbound/outbound rules

Manage IP Addresses

Associate floating IPs to make instances reachable externally

Launch an Instance

Assign security groups during instance creation

Troubleshooting

Resolve connectivity issues related to security group rules