Q2

MCQ1 mark, −0.33

A layer- $4$ firewall (a device that can look at all protocol headers up to the transport layer) CANNOT

(A)

block entire $\text{HTTP}$ traffic during $9:00PM$ and $5:00AM$

(B)

block all $\text{ICMP}$ traffic

(C)

stop incoming traffic from specific $\text{IP}$ address but allow outgoing traffic to the same IP address

(D)

block $\text{TCP}$ traffic from a specific user on a multi-user system during $9:00PM$ to $5:00AM$

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