What I mean is that does each member of a particular LAN get a different external IP (the one other than of the form 10.x.x.x), or do all the members of a LAN get the same external IP. This question comes into my mind because in certain cybercafes I used to frequent all the machines had different internal ips but the same external ip. The cybercafes which I am talking about had a 24x7 internet connection using either a ADSL modem or a cable modem, so whatever external ip they had, it wouldn't change, often in 3 days in a row that I visited them.Another thing is that I have observed that when I log out and log back in on Sify at a different time, I get a different external ip than the one before. This makes me tend to think that after all my fellow members on my LAN might be getting their own external ips independent of me.
Each PC would get a different IP address, but it may be in the same range ... in cyber cafe's there would one central server connected to the internet, and net access is "shared" by the other pcs. So the external ip would be the same. This is what I *think* so it maybe wrong.Our ip's change each time we login, this much is true
noif an external ip was being shared by a subnet it wudnt change everytime u log off and log in.bsides, a shared (by subnet) ip cant create servers. since we CAN create servers, external ip is unique (atleast till the time you are logged in)