Private IP Address

My Internet IP is 192.168.x.x! Private IP Address

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I don’t have an Internet IP Address!
 
Some ISP's do not assign real Internet IP address to their customers. This is getting more and more common - especially with the emerging broadband technologies. If your broadband IP address starts with 192.168 or 10. and you are connected directly to the broadband modem - your service provider has you behind a firewall. This is also known as having a private IP address instead of a public IP address.
What The ISP is Doing
The ISP has probably set up a NAT router for it’s customers. This router will act as a firewall between you and the Internet. In the service provider's eyes, this keeps hackers from reaching your computer directly - a security measure.
How limiting is it?
If your ISP has you behind a NAT router, there is no way for someone on the Internet to initiate an IP conversation with your computer. That means NO SERVERS. You can not run a game server, ftp server or web server. Outgoing VPN connections will most likely not work so forget connecting to your office LAN over the Internet. Advanced teleconferencing programs like NetMeeting will not work. ICQ will not work correctly as well as MSN Messenger file send/receive. Lastly, some multi-player games will not even allow you to join a game on the Internet.
This situation is different than if you ran your own NAT connection sharing box (like a broadband router) because you have no control over the ISP NAT router. If it were your own, you could adjust settings in the router to make most of those applications work properly.
Can anything be done?
The only thing you can do is call your ISP to see if you can get a real IP address. If they can do it, expect a monthly charge. If they tell you no, think about switching service providers because there is nothing you can do about it.
Sharing an Internet connection that has a private IP address
A few unlucky souls have actually had their ISP provided IP address match the default settings of their router! For instance, the ISP might assign an IP address of 192.168.0.5 and your new Linksys router LAN IP address is 192.168.0.1. This will not work because of routing issues. To fix this, simply change the IP schema of the router to something else - like 192.168.100.1
 
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28 comments
My Internet IP is 192.168.x.x! Private IP Address
IP address problem by Omasan - 11/13/2002 5:06:00 PM
Re: IP address problem by Mike - 11/18/2002 2:14:00 PM
Re: IP address problem by hangkheang - 12/31/2002 5:32:00 AM
Re: IP address problem by hangkheang - 12/31/2002 5:33:00 AM
trying to match by John - 1/30/2003 8:09:00 AM
Detail needed on private IPs by Aaron Sherman - 4/8/2003 10:15:00 AM
networking by farhan - 7/16/2004 9:58:00 AM
private ip & wireless modem by Lawrence - 8/22/2004 4:58:00 PM
Setting router ip by Lawrence - 8/22/2004 5:49:00 PM
IP and Internet sharing by 10.24.36.145 - 10/18/2004 3:43:00 AM
Re: IP and Internet sharing by Julio Felix Jose - 11/16/2004 2:34:00 PM
Re: IP and Internet sharing by JIm - 11/17/2004 1:46:00 PM
Re: IP and Internet sharing by mmm - 1/10/2005 5:41:00 AM
routing. by denbigh - 2/4/2005 10:09:00 AM
Re: routing. by rob szkutak - 2/23/2005 9:41:00 PM
Re: routing. by Jay - 2/4/2006 1:33:00 AM
Re: routing. by Dreckman - 2/17/2006 1:57:00 PM
Private IP problem by Vipin - 5/24/2005 1:47:00 PM
Private IP problem by Vipin - 5/24/2005 1:50:00 PM
VOIP problem thru VSAT connection by bnetwork - 7/24/2005 1:56:00 PM
WiFi and LAN and remote desktop problem by xlioilx - 8/19/2005 1:04:00 AM
Re: WiFi and LAN and remote desktop problem by xlioilx - 9/25/2006 6:22:00 AM
Posted by xlioilx
9/25/2006 6:22:00 AM.
Re: WiFi and LAN and remote desktop problem
I don't need this problem resolved. it resolved its self when I moved away.Also the network card was not able to be bridged
pls help, need ip address by internetboy - 6/13/2006 1:34:00 AM
IP by jess - 7/29/2006 11:18:00 AM
Private IP address by Sunil - 8/3/2006 4:19:00 AM
Please Help Me Out!!! by Saurabh - 9/8/2006 9:12:00 AM
Posted by Saurabh
9/8/2006 9:12:00 AM.
Please Help Me Out!!!
Hi All,

I have a cable internet which has RJ45 connector at end which directly connects to LAN Switch (No router used). I have two PCs which are connected to this LAN switch thru network adapter (one in each PC). PC connects to internet using a client application, which authenticates into ISP server and also uses the client IP for authentication at ISP server.

I have been allotted IP 10.1.6.151 having subnet mask 255.255.255.128 and DNS 192.168.222.6. I have added an additional IP of 172.16.0.1 having subnet mask 255.255.255.0 on this PC.

On other PC I have added IP 10.1.6.151 having subnet mask 255.255.255.128 and DNS 192.168.222.6. and additional IP is 172.16.0.2 having subnet mask 255.255.255.0.

Internet can be connected on both PCs individually.

But, now I am trying to access one PC from other and vice-versa but unable to do that. It can PING self but not the other PC.

Please advice where I am going wrong and help me in solving out this problem.


The network diagram is like:


INTERNET
|
|
V
SWITCH-------PC#2
|
|
|
PC#1

Thanks In advance....

Saurabh
Re: Please Help Me Out!!! by Sauarbh - 9/8/2006 9:14:00 AM
Posted by Sauarbh
9/8/2006 9:14:00 AM.
Re: Please Help Me Out!!!
Sorry..

Second PC have IP 10.1.6.152 and not 10.1.6.151

Thanks,
Saurabh

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