Nat Addressing & RDP question

NAT/PAT converts internal private addresses to a single public address. People can have their own internal set of addresses. You can't access somebody elses internal addresses without some forwarding mechanism in the NAT/PAT device.

If you were going to remote into my PC would I give you my private or public address?

networker050184 wrote: »

If you were going to remote into my PC would I give you my private or public address?

Well you'd give me your private ip. which is just your ip.
Whenever anyone gives out their IP, their giving out their private ip, unless their not behind NAT.

If I gave you my private IP there would be no way you could reach my computer routing over the internet.

I would give you my public IP which would be forwarded to my private by the NAT device. When it got to my private it would have your public as the source, not your private.

I think you need a little more reading on NAT. You don't seem to be understanding correctly.

yeah, that makes sense. But see, what if there were other pc's on your local network, how would you giving me your public direct me to your specific pc?

DerekAustin26 wrote: »

yeah, that makes sense. But see, what if there were other pc's on your local network, how would you giving me your public direct me to your specific pc?

You'd configure multiple port forwarding rules on the gateway.

What he said.

tiersten wrote: »

You'd configure multiple port forwarding rules on the gateway.

But what if i didnt configure anything on my router and it's already doing it? I'm connected directly to my modem provided by my ISP. My bro wants to connect to me, all he does is enter in the IP i gave him and bam, he's connected to me. There is another computer using the same network in this house wirelessly.

So back to the original question, how is he getting to my pc with just my ip when I never gave him my public ip or made configurations on my router?

The modem just send all traffic destined to it for the inside address by default.

On your brothers side it works a little different since the connection is outbound.

What IP address are you giving him?

DerekAustin26 wrote: »

But what if i didnt configure anything on my router and it's already doing it? I'm connected directly to my modem provided by my ISP. My bro wants to connect to me, all he does is enter in the IP i gave him and bam, he's connected to me. There is another computer using the same network in this house wirelessly.

How is the wireless connected?

Is it:
Internet <---> Modem <---> YourPC <--Wireless--> OtherPC

networker050184 wrote: »

the modem just send all traffic destined to it for the inside address by default.

On your brothers side it works a little different since the connection is outbound.

What ip address are you giving him?

192.168.2.2

DerekAustin26 wrote: »

192.168.2.2

That is a private non routeable IP address. Unless you're doing something like IPSEC then that won't work. He's either using another IP or there is something else going on.

tiersten wrote: »

How is the wireless connected?

Is it:
Internet <---> Modem <---> YourPC <--Wireless--> OtherPC

Internet -- Modem -- WAP -- PC or Wireless PC

Bl8ckr0uter

DerekAustin26 wrote: »

192.168.2.2

You aren't using any vpn or anything?

That is the way it works for me at work. I connect to the vpn > I connect to my work machines private ip using rdp and it works. Are you guys using anything like that?

Like tiersten said it doesn't work that way. You are both either on the same LAN or have a tunnel set up.