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Page 5 | AlliedWare™ OS How To Note: VPNs for Corporate Networks
Policies and
interfaces
It is useful to keep in mind that you apply firewall rules and IPsec policies to interfaces in the
following different ways:
z Firewall rules can be applied on either private or public interfaces. The rules are matched
against traffic that comes into the interface to which they were applied. Rules applied to
private interfaces are typically quite different to rules applied to public interfaces.
z IPsec policies are applied only on the public interface. The policy definitions, and any active
Security Associations (SAs), are considered for both incoming and outgoing traffic on that
interface.