How to detect IP of a computer using shared internet connection?

Question

Suppose an ISP connects all his client PCs in LAN and share an internet connection to them all over the LAN. How to detect the IP address of such computer in LAN from a computer outside that LAN(using another internet connection).

Answer 1

It sounds like you want to scan a subnet to find IP's. It is perfectly legal to scan, but it may be a problem if you try to connect to, or control a computer without permission. The idea is similar to walking through a mall after hours, and trying the door handles. If one of them is unlocked, that doesn't give you permission to go inside.

One of the most common port scanning tools is nmap.

Answer 2

Based on what you just stated, The ISP uses NAT (net address translation) for all his users, you are outside and want to "detect" the address of one computer inside the LAN from outside the LAN... YOU CAN'T!

That is part of the "protective" use of NAT. There is only ONE public IP, that will be the ONLY IP you can find from outside the network all the rest of that setup is on a private network not directly addressable from outside. The only way to find the address of someone on that LAN (local area network) is from the LAN side of that network segment!

Answer 3

instal 2 community card on your significant pc. it is going to likely be the server for the different. significant internet connection comprises it with the aid of a community card. from the different nic create a bridge connection to the shopper gadget. enable sharing of internet interior the server from community techniques. you're accomplished. (provide some community ips to the shopper and the 2nd nic of the server.)

Answer 4

do u know about linux command nmap
ex:> nmap -sP 192.168.1.0/24
use this command line than u show how many computer are ping u computer. or use windows os angry IP scanner.
them share computer through lan or wan

Answer 5

if u got any answer form users pls send me