Consider again the SDN OpenFlow network shown in Figure 4.30. Suppose we want switch s2 to function as a firewall. Specify the flow table in s2 that implements the following firewall behaviors (specify a different flow table for each of the four firewalling behaviors below) for delivery of datagrams destined to h3 and h4. You do not need to specify the forwarding behavior in s2 that forwards traffic to other routers.

* Only traffic arriving from hosts h1 and h6 should be delivered to hosts h3 or h4 (i.e., that arriving trffic from hosts h2 and h5 is blocked) * Only TCP traffic is allowed to be delivered to hosts h3 or h4 (i.e., that UDP traffic is blocked) * Only traffic destined for h3 is forwarded (all traffic destined for h4 is blocked) * Only UDP traffic scheduled from H1 to H3 is sent (all other traffic is blocked).

sl OpenFlow s2 Host h6 10.3.0.6 Host h4 1020A Host h5 10.3.0.5 Host h1 10.1.0.1 Host h2 10.1.0.2 Host h3 10.2.0.3 4.30 . OpenFlow , 6 , 3 OpenFlow s2