Connecting GNS3 to the internet Part 1

[1SaudiCOOL]

This is great i was looking for this for a long time. Thanks a lot.

[Qurnah]

At 6:23, why did you use the Default Gateway as 192.168.137.2 ?

I thought the default gateway is meant to be the IP address of your ADSL router/switch in this case?

Setting up 192.168.137.2 as a default gateway to your Loopback interface will return all the traffic back to your emulated GNS3 router because that's the IP address of the emulated router.

Could you please clarify ?

Cheers

[shamalawy]

@Qurnah well, since logically the router is connected to the PC first, then the PC routes the packets to its "REAL" physical interface which is connected to the ADSL router.. then you can consider the PC as the GW for the GNS3 router.. does that make any sense?

[Qurnah]

@shamalawy Thanks for that.

[shamalawy]

@Qurnah consider this as the topology..

GNS3 router ----> PC ------> ADSL Router ----> THE INTERNET

[winstonsmith2600]

This has to be by far the best set of instructions on how to setup ICS with GNS3. Much better than bridging. I spent all night trying out different methods and all I had to do was look on youtube. Thanks! The step I was missing was the route at the end. Why I didnt think of that earlier?

[Verbium]

I can't begin to thank you for this video, no other solution worked online and the time was ticking down for my dissertation. I can now completely my practical finally :D

[shamalawy]

@Verbium i'm at your service at any time. feel free to message me if you need anything, hopefully i can always help.

[123456iambelial]

I could ping the loopback adapter from the router.

I believe because the loopback is in public network. However, I could not make the loopback in Private network.

I usually disable my NIC and the loopback would give a prompt and I chose Private. But now, if I open two loopbacks there is no more prompt for making it private network.

Is there a fix for this?

[shamalawy]

@123456iambelial well, make sure you have your firewall disabled because GNS for the router is an external network.. you can also add a static route to windows incase you want to reach something beyond the edge router or see part 2 to know how to advertise you network routes to the PC.. and always choose the network as HOME network for the loopback interface.

[123456iambelial]

@shamalawy I got it to work, and can ping the internet now; however, I the loopback interface is still in public. I have another problem. I will PM you because it is not going to fit here in the comment section.

[PicklesReallySuck]

i was looking for a way to connect to an NTP server so I can do various authentication things and needed to connect GNS3 to the internet to do that.  This video is great.

[PicklesReallySuck]

Well after the loopback thing giving me weird results. I skipped all of that. I just added a cloud in GNS3, went to config, added my physical NIC interface. connected gns3 router to the cloud with Fa0/0, gave it an ip in the same subnet as my actual physical NIC interface and set iproute 0.0.0.0 0.0.0.0 fa0/0 in GNS3.

I can connect to the internet just fine through GNS3, the entire process of messing around with loopbacks seems unnecessary

[shamalawy]

@PicklesReallySuck well, this technique is different, i used NAT to get to the outside world, but you BIDGED your virtual interface with the physical interface.. they both work great.. good thing you mentioned that so that other viewrs can benefit from it..

[PicklesReallySuck]

@shamalawy ah, I'll have to rewatch your video so I can understand the difference. I know what nat is, but I never though about using nat in this way.

[yonxue]

restart your computer and try again

[klubbpaulo]

Thanks! I got this! :P ... But Question: how did U get Qemu Images? 'cause I already have internet connection from my ehternet internet. Thanks!

[klubbpaulo]

I have the same adatau's problem... any suggestions?

[shamalawy]

@klubbpaulo try running GNS as an administrator, i windows xp SP3 compatability mode and see if it works, in order to access local interfaces with GNS3, you have to be an administrator. take it as a rule for all programs

[shamalawy]

@klubbpaulo try running GNS as an administrator, i windows xp SP3 compatability mode and see if it works, in order to access local interfaces with GNS3, you have to be an administrator. take it as a rule for all programs

[thoughtpattern]

@klubbpaulo Restart your computer

[thoughtpattern]

@klubbpaulo restart your computer

[adatau]

after I installed MSLoopback and followed the config accordingly, I still doesn't see the loopback in NIO Ethernet GNS3. I'm using Windows 7. can you help please?

[s4phil]

Thanks a million for a excellent video instruction. Share some more off your knowledge ..$

[Chicagotarsier]

XP config does not work.

[Chicagotarsier]

So I followed this and I got an error that the loopback address 192.168.0.1 was in use. My computer is behind a router..and I assume it used this address. Any suggestions?

[shamalawy]

well, if your router is using this ip address, you'll have to change your router's DHCP settings, I mean your REAL router that connects you to the internet.. maybe you can using anything different like 192.168.7.0 network.. see if it works, just make sure that your shared interface is using 192.168.0.0/24 network which is you loopback interface

[mrsamer]

Hi there: I have done the same steps you mentioned and i'm using VISTA .. now when i went to the could to configure it i couldn't see any Network int under NIO Ethernet sharing ( you managed to see 3 of them in ur Vid ) ,, wts wrong ?! help plz.

Thanks.

[shamalawy]

jut type hdwwiz.exe at the Run windows.. and manually intall the loopback interface. you'll find it under the network interfaces menu.. hope it helps man

[danishmoughal]

Thankyou boi!!! you really helped thanks alot

:D

[lepurestyle]

thanks it helped a lot, just to mention that people should not forget to set their "real" internet connection and ISP provided router on a different network like 192.168.1.0, it avoids the error when sharing.

[expchrist]

Why did you telnet to 127.0.0.1 I tried the same thing and it didn't work for me. Am I doing something wrong?

[shamalawy]

well, i think that you didn't install the loopback interface before you tried to do that. you have to install a loopback interface first.. if you're using windows XP, try installing a new hardware then choose manually, network adaptors then choose MSLoopback interface.. telnetting to router R0 with ip 127.0.0.1 port number 2000 , R1 the same ip and increment the port number by 1 , which is 2001 and so on, try it and see if you can make it work. good luck man.

[ASHUWIFI1]

Good day bro

Thanks for such an nice trick :-)

[imadwo1]

excellent, but there is noise in the background

thank you

[MrGoering]

yeah this is awesome. lol @ goog!

[RIZWAN132]

That's Great man