Wed 23 Apr 2008
In this tutorial, you will learn how to connect an MS Loopback interface on your PC to the PEMU Pix emulator using GNS3. The trick is to use a switch between the cloud and the virtual PIX.
The same theory works to connect your virtual PIX to a physical interface on your PC. I have successfully created a lab that allows me to connect to the inside interface of the PIX to the loopback interface and the outside interface to a physical interface on my PC.
Maybe I will create a tutorial for the above scenario. Stay tuned.
MS Loopback Tutorial
GNS3 - Pix Emulator Tutorial

(11 votes, average: 4.27 out of 5)








April 23rd, 2008 at 4:47 am
thanks so much will give a try
April 23rd, 2008 at 11:11 am
Great as usual, Josh.
I may try to get this running on an old box to simulate a PIX in a real network.
April 28th, 2008 at 3:56 am
What about cisco webvpn (ssl VPN) video soon? Thanks
April 28th, 2008 at 11:02 pm
Todendi,
If you have an ASA firewall, I would like to do a tutorial on SSL VPN with the new AnyConnect Client.
I have installed it on an ASA and it is very nice.
The problem is that it only runs on ASA ver 8.0 and on an ASA firewall and not a pix. Pemu does not emulate an ASA (only a Pix). I have not been able to get ver 8.0 to run with pemu.
Josh
May 1st, 2008 at 11:58 am
What kind of software do you use to create this wonderful video? Thanks,
May 1st, 2008 at 11:18 pm
I used Camtasia Studio for this video. I have also used Wink in the past.
May 18th, 2008 at 4:13 pm
just one word
brilliant
May 22nd, 2008 at 9:55 pm
Is there any one can write the steps by step for connect pc to pix?
please
i cant see the video
thanks in advance
May 31st, 2008 at 2:02 am
[...] Since I discovered Dynamips and Pemu, I have been trying to figure out a way to test Pix configurations with a single PC running Windows XP. The real trick has always been communicating with the virtual Pix. With Linux, it was not a problem but Windows has always been another story until I recently figured out how to communicate with pemu using GNS3. [...]
June 17th, 2008 at 3:41 pm
I am having problem saving the topology. The network consist one cloud, one switch, and a PIX. Everything is working fine (can telnet to the PIX from my PC) but if I saved the network and re-launch the .net file. The switch will no longer there and the cloud will no longer work. I have to re-create another cloud and put in a switch again. I have this error when I tried to save the network. “KeyError: u’localhost:7200′. Can someone help?
June 24th, 2008 at 9:22 am
I have the same save problem
June 24th, 2008 at 9:39 am
I am working on a tutorial for saving labs. It is a little tricky. - josh
June 30th, 2008 at 4:10 am
Thanks Josh, yeah I still have that problem.
July 1st, 2008 at 1:12 pm
I am new to PEMU and GNS3 and I need some guidance on the basic setup for PIX.
When I setup the PEMU PIX information (i.e. path, SN, KeyCode), I receive a PEMU error ‘…Pemu cannot start on port 10525…’ as soon as I place the PIX icon in the workspace. I am running MS Vista and using PIX 7.24
Any help would be appreciated.
TomK
July 12th, 2008 at 2:27 am
No matter what i do, i am unable to ping the inside interface of the PIX in PEMU, the outside interface works fine, When i connect the cloud to the router, i can ping the router from my PC, but not the PIX.
I have used the switch, so thats not the problem.
i have connected two PIX using switches parallely, i can mutually ping their outside interfaces but, not the inside interfaces.
Could anyone suggest a solution.
July 12th, 2008 at 8:25 am
Hi
Im facing all kinds of strange problems with PEMU, i have connected a PC’s loopback interface to a switch and then to a PIX, the PIX is then connected to the router, i can ping the firewall outside from the router and vice versa
this image represents the setup, ignore the second PIX
http://i342.photobucket.com/albums/o410/vj_v1/test1.jpg
The problem is i am not able to ping the PIX from the PC, the loopback interface etc are fine, when i ping from the PIX to the pc and simultaneously from the PC to the PIX, i get the ping every now and then. this seems somewhat strange,
http://i342.photobucket.com/albums/o410/vj_v1/test2.jpg
Could anyone suggest a solution
Thanks in advance
July 13th, 2008 at 1:44 am
@Vj,
Could it be an ARP issue between the loopback interface and the PIX? Maybe try connecting the pix to your ethernet interface instead of the loopback.
Use arp -a to see arp resolution on the PC and show arp on the firewall.
Josh
July 13th, 2008 at 8:08 am
Thankyou for the reply
arp appears to be fine but the problem still persists.
http://i342.photobucket.com/albums/o410/vj_v1/test3.jpg
July 17th, 2008 at 12:11 am
outstanding tutorials and tips…
keep it up…
thanks
July 17th, 2008 at 12:12 am
i am adding you to my site…