a. Give the simple stateful packet inspection firewall rule for packets that do not attempt to open connections. b. Is SPI filtering for packets that are part of ongoing communications usually simple...

a. Give the simple stateful packet inspection firewall rule for packets that do not attempt to open connections. b. Is SPI filtering for packets that are part of ongoing communications usually simple and inexpensive? Explain. c. UDP is connectionless. How is it possible for an SPI firewall to handle UDP connections?