Delete an Interface or remove an IP address from an Interface

This article details how to remove interfaces and IP addresses from interfaces.

Before you begin

Remove or replace IP addresses used in other areas of Smoothwall before deleting an Interface or IP address from an Interface. If you don’t, you’ll see an error message and won’t be able to proceed. The error message will say: ‘There are errors in this form. Please address the following: Unknown or unusable address selected.’

These are some of the most important areas to check, but we recommend inspecting all your systems before making changes:

• Firewall Rules that include the IP address.
• Link Load Balancing pools that include the IP address or interface.
• Source NAT & LLB exception rules for traffic generated by Smoothwall.
• DNS settings that include an IP address or interface.
• Port forwards rules that include the interface.
• Smoothwall access rules that include an IP address or interface.
• (Leeds and prior only) SIP Proxies using the interface.
• (Leeds and prior only) Any IPSec tunnels using the IP address for incoming connections.
• (Leeds and prior only) Bandwidth interface limits.

Delete an Interface

1. Go to Network > Configuration > Interfaces.
2. Hover over the Interface and select Delete.
3. Confirm Delete.

Remove an IP address from an Interface

1. Go to Network > Configuration > Interfaces.
2. Hover over the interface and select IP addresses.
3. In the Attached addresses table, hover over the old IP address.
4. Select Delete.

Alternatively, to keep the item in the list:

1. Go to Network > Configuration > Interfaces.
2. Hover over the interface and select IP addresses.
3. In the Attached addresses table, hover over the old IP address.
4. Select Edit.
5. Clear the Enabled checkbox.
6. Select Save changes.