I was wondering if you have a private network that is behind a NAT router, or being assigned an address via DHCP, or is behind a proxy, can other computers from the public network (Internet) initiate communication with any private network computers?
(1)That is waht I have assumed.Say you have a web server 192.168.1.1 in your network 192.168.1.0.You are using NAT/PAT to access internet and your single point exit IP is 10.0.0.1.
Now If a person from outside need to access your web-server then through my config, he will give 10.0.0.1 in his web-browser.But since I have forwarded port 80 on to my 192.168.1.1,The request for port 80 will be forwarded to 192.168.1.1.Thsi is port-forwarding.
(2)Behind a proxy-server is also possible through above.
(3)If you use DHCP, then itsnot possible until and unless you have binded that IP with that MAC, b'coz you need to define an IP in the port-forwarding.
Oh, I see now :) Yes, it does make sense that port forwarding could be used in this situation. What does the "extendable" command do?
How about if you wanted to ping the webserver from the public network? I've read that ICMP is a "pure" layer three protocol with no higher level support (ie. no port number). Is there any way to ping the inside?
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