about the Ip

thung_mail · 05-17-2005, 06:36 PM

Hi all
I have a problem to understand about the IP address. First of all, i got one 68.70.130.221. for Ip from http://whatismyip.com/. On the other hand, I got one:192.168.1.5,different from the first one. Therefore, could you help me out this trouble. What is difference between 2 of them.Thank you very much
Tuan

randruff · 05-17-2005, 06:58 PM

your ip that reads 68.70.130.221 is your external ip address. This means that that ip address is assigned to you by your internet service provider. That ip is the number that the world is able to see. Your other ip, 192.168....is your internal ip address. this ip is assigned by your router to your computer on the LAN. It works like this.....lets say you type in www.google.com and hit enter....your computer sends the request which ends up at googles server and google sends its response back to you. when that information enters your router, your router needs to know where to send it to (which computer on the network). It knows where to send it because every computer on your network has a different internal ip. as a side note, this is why a router acts as a firewall....any packets it received that were not requested by an internal ip addy, it rejects because it does not know where to send them. hope this helps.

thung_mail · 05-17-2005, 07:16 PM

hi all
Thank for your answer. It is pretty much helpfull.
Tuan

thung_mail · 05-17-2005, 07:20 PM

hi all
If i connect my computer directly to the modem, my ip would be 68.70.130.221. Is it rite?
Tuan

thung_mail · 05-17-2005, 07:26 PM

hi all
what i s the meaning of Default Gateway and what is it used for.
Tuan

randruff · 05-17-2005, 08:46 PM

I would highly recommend NOT connecting your computer directly to the cable modem but yes that would then be the only ip that would apply to your computer. even when you are connected to your router, your external ip is still your ip.

Byteman · 05-17-2005, 09:12 PM

your computer (ip:192.168....)------Internal router/your gateway (192.168....)-External router (68.70.130.221).

Your computer should pickup all it's settings from the router. And you DNS should be configured inside the router as well, not your computer.

So everyone on the internet should see you as 68.70.130.221, however some sites are able to query the local machine through the router and can see you 192.168... address.

randruff · 05-17-2005, 10:54 PM

byteman to the rescue!

thung_mail · 05-18-2005, 08:16 AM

hi all
Thanks for all your response. Can any one explain for me what Gateway default is used for. Thanks
Tuan

Byteman · 05-18-2005, 03:16 PM

a gateway is generally termed as the last router you pass through when leaving your network to go to another network. Hence the name "gateway". In most home cases it means their dsl router (leaving their home network and going to their ISP's network).

05-17-2005, 06:36 PM	#1 (permalink)
thung_mail New Member Join Date: May 2005 Posts: 5	about the Ip Hi all I have a problem to understand about the IP address. First of all, i got one 68.70.130.221. for Ip from http://whatismyip.com/. On the other hand, I got one:192.168.1.5,different from the first one. Therefore, could you help me out this trouble. What is difference between 2 of them.Thank you very much Tuan

05-17-2005, 09:12 PM	#7 (permalink)
Byteman Malware Destroyer Join Date: Apr 2005 Location: Hurricane Heaven... still Posts: 1,093	your computer (ip:192.168....)------Internal router/your gateway (192.168....)-External router (68.70.130.221). Your computer should pickup all it's settings from the router. And you DNS should be configured inside the router as well, not your computer. So everyone on the internet should see you as 68.70.130.221, however some sites are able to query the local machine through the router and can see you 192.168... address. __________________ Don't byte off more than you can chew...

05-18-2005, 03:16 PM	#10 (permalink)
Byteman Malware Destroyer Join Date: Apr 2005 Location: Hurricane Heaven... still Posts: 1,093	a gateway is generally termed as the last router you pass through when leaving your network to go to another network. Hence the name "gateway". In most home cases it means their dsl router (leaving their home network and going to their ISP's network). __________________ Don't byte off more than you can chew...

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05-17-2005, 06:58 PM	#2 (permalink)
randruff Platinum Member Join Date: Dec 2004 Location: 30 min south of iraq....oops....Detroit. Age: 27 Posts: 742	your ip that reads 68.70.130.221 is your external ip address. This means that that ip address is assigned to you by your internet service provider. That ip is the number that the world is able to see. Your other ip, 192.168....is your internal ip address. this ip is assigned by your router to your computer on the LAN. It works like this.....lets say you type in www.google.com and hit enter....your computer sends the request which ends up at googles server and google sends its response back to you. when that information enters your router, your router needs to know where to send it to (which computer on the network). It knows where to send it because every computer on your network has a different internal ip. as a side note, this is why a router acts as a firewall....any packets it received that were not requested by an internal ip addy, it rejects because it does not know where to send them. hope this helps.

05-17-2005, 07:16 PM	#3 (permalink)
thung_mail New Member Join Date: May 2005 Posts: 5	hi all Thank for your answer. It is pretty much helpfull. Tuan

05-17-2005, 07:20 PM	#4 (permalink)
thung_mail New Member Join Date: May 2005 Posts: 5	hi all If i connect my computer directly to the modem, my ip would be 68.70.130.221. Is it rite? Tuan

05-17-2005, 07:26 PM	#5 (permalink)
thung_mail New Member Join Date: May 2005 Posts: 5	hi all what i s the meaning of Default Gateway and what is it used for. Tuan

05-17-2005, 08:46 PM	#6 (permalink)
randruff Platinum Member Join Date: Dec 2004 Location: 30 min south of iraq....oops....Detroit. Age: 27 Posts: 742	I would highly recommend NOT connecting your computer directly to the cable modem but yes that would then be the only ip that would apply to your computer. even when you are connected to your router, your external ip is still your ip.

05-17-2005, 10:54 PM	#8 (permalink)
randruff Platinum Member Join Date: Dec 2004 Location: 30 min south of iraq....oops....Detroit. Age: 27 Posts: 742	byteman to the rescue!

05-18-2005, 08:16 AM	#9 (permalink)
thung_mail New Member Join Date: May 2005 Posts: 5	hi all Thanks for all your response. Can any one explain for me what Gateway default is used for. Thanks Tuan