SteelHead's enhanced auto-discovery feature makes deployment easy but can sometimes cause unwanted appliances (not part of your organization) to connect. To prevent this, you can create a pass-through peering rule to block these appliances and remove them from your peer list. Create a pass-through rule for the unwanted appliance by specifying its subnet as the source and your local network subnet as the destination.

Alternatively, create a rule that only allows peering from your organization's subnet and denies others. Place this rule at the top of the list. Add a second rule to allow all other traffic to pass through. With these rules, your local SteelHead will either peer with an appliance (if it matches the accept rule) or ignore it (if it matches the pass-through rule).

Any unknown appliances will appear in the Current Connections report as "Connected Appliances" until their connection times out. Once inactive, they’ll appear dimmed, and you can restart the service to remove them completely.