Consider the scenario in the following figure. Host (IP address 10.0.0.1) sends a HTTP request to an external web server (IP address 128.119.40.186). The IP address of the NAT router is 138.76.29.7. The NAT translation table is also shown in the figure. Fill in the IP addresses and port numbers for packet going out from the NAT router to the web server (packet 2), reply packet from the web server to the NAT router (packet 3), and from the NAT router to the internal host (packet 4).

The source IP address is.......... , source port number is ........

The destination IP address is ...................., destination port number is ..............

For packet from web server to NAT router(packet 3):

The source IP address is .........., source port number is ..............

The destination IP address is.......... , destination port number is ..........

For packet from NAT router to internal host (packet 4):

The source IP address is.......... , source port number is ..........

The destination IP address is.......... , destination port number is ..........

 

Transcribed Image Text:

SD NAT translation table WAN side addr LAN side addr 138.76.29.7, 5001 10.0.0.1, 3345 138.76.29.7 3 10.0.0.4 1: host 10.0.0.1 sends datagram to 128.119.40.186, 80 S: 10.0.0.1, 3345 D: 128.119.40.186, 80 10.0.0.1 10.0.0.2 10.0.0.3 SD NAT translation table WAN side addr LAN side addr 138.76.29.7, 5001 10.0.0.1, 3345 138.76.29.7 3 10.0.0.4 1: host 10.0.0.1 sends datagram to 128.119.40.186, 80 S: 10.0.0.1, 3345 D: 128.119.40.186, 80 10.0.0.1 10.0.0.2 10.0.0.3

Answer rating: 100% (QA)

Packet 2 NAT router to web server Source IP address 13876297 Source port number 5001 De... View the full answer