Review the following diagram depicting communication between PC1 and PC2 on each side of a router.Analyze the network traffic logs which show communication between the two computers as captured by thecomputer with IP 10.2.2.10.
DIAGRAM
PC1 PC2
[192.168.1.30]--------[INSIDE 192.168.1.1 router OUTSIDE 10.2.2.1]---------[10.2.2.10]
LOGS
10:30:22, SRC 10.2.2.1:3030, DST 10.2.2.10:80, SYN
10:30:23, SRC 10.2.2.10:80, DST 10.2.2.1:3030, SYN/ACK
10:30:24, SRC 10.2.2.1:3030, DST 10.2.2.10:80, ACK
Given the above information, which of the following can be inferred about the above environment?
A. The web server listens on a non-standard port.
B. 192.168.1.30 is a web server.
C. The router implements NAT.
D. The router filters port 80 traffic.
Answer
C. The router implements NAT.
DIAGRAM
PC1 PC2
[192.168.1.30]--------[INSIDE 192.168.1.1 router OUTSIDE 10.2.2.1]---------[10.2.2.10]
LOGS
10:30:22, SRC 10.2.2.1:3030, DST 10.2.2.10:80, SYN
10:30:23, SRC 10.2.2.10:80, DST 10.2.2.1:3030, SYN/ACK
10:30:24, SRC 10.2.2.1:3030, DST 10.2.2.10:80, ACK
Given the above information, which of the following can be inferred about the above environment?
A. The web server listens on a non-standard port.
B. 192.168.1.30 is a web server.
C. The router implements NAT.
D. The router filters port 80 traffic.
Answer
C. The router implements NAT.
