CCNP Routing 选择题第108题，答案是不是错了？

herofrancisguo

QUESTION 108
Refer to the following configuration command.
router(config)# ip nat inside source static tcp 172.16.10.8 8080 172.16.10.8 80
Which statement about the command is true?
A. Any packet that is received in the inside interface with a source IP port address of
172.16.10.8:80 is translated to 172.16.10.8:8080.
B. Any packet that is received in the inside interface with a source IP port address of
172.16.10.8:8080 is translated to 172.16.10.8:80.
C. The router accepts only a TCP connection from port 8080 and port 80 on IP address
172.16.10.8
D. Any packet that is received in the inside interface with a source IP address of 172.16.10.8
is redirected to port 8080 or port 80.
Correct Answer: B
请问正确答案是A还是B? 希望获得高手解答，谢谢。

anubis_amon

答案没错，解释的也没错，是你看的不仔细，给你个提示，看清inside还是outside

herofrancisguo

Having a web server on the internal network is another example of when it may be necessary for devices
on the internet to initiate communication with internal devices. In some cases the internal web server may
be configured to listen for web traffic on a TCP port other than port 80. For example, the internal web
server may be configured to listen to TCP port 8080. In this case, you can use NAT to redirect traffic
destined to TCP port 80 to TCP port 8080.
After you define the interfaces as shown in the previous network diagram, you may decide that you want
NAT to redirect packets from the outside destined for 172.16.10.8:80 to 172.16.10.8:8080. You can use a
static nat command in order to translate the TCP port number to achieve this.

它自己下面的解释都说是把 172.16.10.8:80 转换成 172.16.10.8:8080， 那不应该是A吗？

chenqiny

谢谢

chenqiny

谢谢

herofrancisguo

up

herofrancisguo

anubis_amon 发表于 2019-4-4 16:48
答案没错，解释的也没错，是你看的不仔细，给你个提示，看清inside还是outside

谢谢
我还有一道题希望你能帮我看一下，在这个帖子:https://bbs.hh010.com/thread-565945-1-1.html

basasay

uuuuuuu

basasay

hoready

顶一下