In order for a firewall to effectively control traffic flow?
a. it must be both a router and a switch
b. it must stateless
c. all traffic must be made to flow through it
d. it must utilize vpns

Usually, when we sniff packets, we are only interested certain types of packets. we can do that by setting filters in sniffing. scapy’s filter use the bpf (berkeley packet filter) syntax; you can find the bpf manual from the internet. set the following filters and demonstrate your sniffer program again (each filter should be set separately): (a) capture only the icmp packet. (b) capture any tcp packet that comes from a particular ip and with a destination port number 23. (c) capture packets comes from or to go to a particular subnet. you can pick any subnet, such as 128.230.0.0/16; you should not pick the subnet that your vm is attached to.

How is a wan different than a lan? both connect computers, but only wan users don’t need the same operating system. both are peer-to-peer networks, but only a wan requires networking hardware. both network computers, but only a wan can cover larger geographical ranges. both connect computers to the internet, but only wan connects to the cloud.

Brad wants to buy flowers for his friend with 33 dollars. the daisies are 1 dollar each and the roses are 2 dollars each he buy 3 more daisies than roses how much did the roses cost