引用:
原帖由 cainester 於 2012-7-31 17:19 發表
Thanks for the explanation
One more thing I don;t get...it seems that these IP (even with ports) are very similar between each other
e.g. your example 192.168.0.3
I am sure a lot of people ...
192.x.x.x
呢個internal IP黎,
簡單D講就係,要係physically within 你個lan (network)先可以用
ftp://192.168.0.3:21 入個NAS
街外人唔得的,所以要係router做port-forward
當人地打你網址e.g.
ftp://cainester.com:21,
咁router就會識得人地入你port 21就forward去你部NAS度
----街外客,入ftp with port 21---->router----forward,port 21---->NAS (port 21)