I'm having some difficulty understanding ip addresses. Let's say:

Question Info:

private subnet 192.168.0.0/24

Now, a host 192.168.0.2:1234 retrieves a web page from the web server at 42.35.12.33.

Then, host 192.168.0.5:1234 retrieves a web page from the web server at 100.12.45.11

Now, I have this information for first the request part:

internal

192.168.0.2:1234 (src)

42.35.12.33:80 (dest)

external:

212.201.49.1:1234 (src)

43.35.12.33:80 (dest)

Where does 80 come from at the end of dest?

Now, for the second request, the src address of external is 212.201.49.2:1234.

Why is it 2.1234? In the 3rd one, it was 1 again.

• For the first external req, the src is  212.201.49.1:1234 . This makes sense. Now the second external req, src is 212.201.49.2:1234 and the third is  212.201.49.1:1234 again. So why is this and changing? – x89 Apr 20 '20 at 21:55