The number of simultaneous connections from the LAN behind an NAT-enabled router is unlimited.单项选择题
A
True
B
False
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NAT : Network Address Translation In the following home network, host 192.168.5.1 sends a HTTP request to a web server of IP address 129.112.40.6, and receives a HTTP response. Relating to this request, the NAT table at the home router has the following entry: WAN side addr WAN side port LAN side addr LAN side port 130.155.169.8 6123 192.168.5.1 3456 Complete the following table to show what you would observe at the home router's WAN interface point A and host 192.168.5.1's network interface point C. Datagram Observed at Source IP addr Source port Destination IP addr Destination port HTTP request point C [Fill in the blank] 3456 [Fill in the blank] 80 HTTP request point A [Fill in the blank] 6123 [Fill in the blank] 80 HTTP response point A [Fill in the blank] 80 [Fill in the blank] 6123 HTTP response point C [Fill in the blank] 80 [Fill in the blank] 3456
Ch08. The number of simultaneous connections from the LAN behind and NAT-enabled router is limited to 4 (one for HTTP server, one for FTP server, one for SMTP server, and one for DNS).
13- NAT (Network Address Translation) replacing the source IP address and the port number of every outgoing datagram to a new IP address (NAT IP address) and a new port number.
NAT : Network Address Translation In the following home network, host 192.168.5.1 sends a HTTP request to a web server of IP address 129.112.40.6, and receives a HTTP response. Relating to this request, the NAT table at the home router has the following entry: WAN side addr WAN side port LAN side addr LAN side port 130.155.169.8 6123 192.168.5.1 3456 Complete the following table to show what you would observe at the home router's WAN interface point A and host 192.168.5.1's network interface point C. Datagram Observed at Source IP addr Source port Destination IP addr Destination port HTTP request point C [Fill in the blank] 3456 [Fill in the blank] 80 HTTP request point A [Fill in the blank] 6123 [Fill in the blank] 80 HTTP response point A [Fill in the blank] 80 [Fill in the blank] 6123 HTTP response point C [Fill in the blank] 80 [Fill in the blank] 3456
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