Nokia Solutions and Networks Oy

Huanxin Xiong

Prashant Shanbhag

Joshua Dennis

Qiang Wu

Jason M'Sadoques

Various example embodiments for supporting firewalling of traffic are presented. The support for firewalling of traffic may include support for firewalling of layer-2 traffic (e.g., applying firewall rules to layer-3 traffic embedded within layer-2 frames) using a layer-2 firewall. The firewalling of layer-2 traffic by a layer-2 firewall may include support for firewalling of layer-2 traffic associated with various types of layer-2 services. The firewalling of layer-2 traffic by a layer-2 firewall may include support for firewalling of layer-2 traffic for which the layer-2 destination address of the traffic is known and layer-2 traffic for which the layer-2 destination address of the traffic is unknown. The firewalling of layer-2 traffic by a layer-2 firewall may include receiving, by a router, a packet of a flow of a layer-2 service and supporting, by the router, layer-2 firewalling of the packet at the router while honoring layer-2 forwarding of the packet at the router.

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Huanxin Xiong