What effect does the following command have on TCP packets? iptables- A INPUT -d 10.142.232.1 -p tcp –dport 20:21 -j ACCEPT
A. Forward all TCP traffic not on port 20 or 21 to the IP address 10.142.232.1
B. Drop all TCP traffic coming from 10.142.232.1 destined for port 20 or 21.
C. Accept only TCP traffic from 10.142.232.1 destined for port 20 or 21.
D. Accept all TCP traffic on port 20 and 21 for the IP address 10.142.232.1
|
Download Printable PDF. VALID exam to help you PASS. |
 |
Answer D is correct. INPUT chain is only for packets that are destined to local machine. Hence for this question 10.142.232.1 is the ip address of the local machine( may be this machine has many network interfaces)
Answer D is correct!