« Regular Expressions | Main | Guidelines on Firewalls and Firewall Policy »

April 21, 2006

Learning Simple NAT

One of the most common questions I get from new Cisco folks is, "how do I configure NAT on a Cisco router?" Rather than just explain it, I thought I'd show ya :o).

Click here to check it out!

Please let me know what you think.

Posted by JC at April 21, 2006 12:20 PM

Trackback Pings

TrackBack URL for this entry:
http://www.cioara.org/cgi-bin/mt-tb.cgi/60

Listed below are links to weblogs that reference Learning Simple NAT:

» Cisco Information from MrKernel Network
It still amazes me how little Cisco information there is on the web. You look at Microsoft, OS X, Linux, or BSD and you will find How-to’s, forms, and knowledge base articals. Is it some big ploy to hord all this knowledge from the general publi... [Read More]

Tracked on May 14, 2006 10:20 PM

Comments

Cool idea, what did you use to do that?

Sean

Posted by: Sean at April 22, 2006 8:09 AM

Cool! Would like to see more of these.

Posted by: Mike at April 22, 2006 7:50 PM

Awesome blog man. Very Cool.

Posted by: Rick at April 23, 2006 2:54 AM

Thanks - I just used an AVI recorder, then converted the AVI to a flash file. I'm pretty impressed at the result. I'd like to figure out how to embed the movie into the original page; however, I've got two problems:

1. The flash file starts playing immediately (which would cause a problem whenever someone came to ciscoblog.com)

2. I'm a Cisco guy, which means I'm stupid when it comes to web coding. :) It'll take me hours to figure it out.

I've got a couple web folks I know. I'll see if they can help me out.

Posted by: Jeremy at April 24, 2006 6:01 AM

Super cool.. More. More. More..

Billy

Posted by: Billy at April 24, 2006 7:38 PM

Great blog. Rory in Ireland

Posted by: Rory at April 26, 2006 3:06 PM

Very cool. I would like to see more of these. In particulare more detail on the overload command. Go more into detail on the different types of nat and how you enable them. e.g. full cone NAT, restricted cone NAT, and port restricted cone NAT.

Posted by: Justin at May 14, 2006 5:21 PM

Good presentation, but how about the reverse configuration. I mean to configure the same router to access an inside IP host from outside. (DHCP)?

Posted by: Abdel at May 22, 2006 8:23 AM

Much as I dislike "me too" postings, I too am struggling to find out how to make a Cisco router do full cone nat. I've got the NAT working, just not as full cone.

But I thought the tutorial was good.

Posted by: Simon Hobson at June 22, 2006 10:30 AM

Hi!

I have to configure a little complicated NAT Configuration, including two outside interfaces, fail-over and access of web mail server to both outside interfaces at the same time.
Can you help me with that?

Posted by: Peter Ginchev at August 20, 2006 3:35 AM

excellent information.

Posted by: aarkay at June 8, 2007 11:59 AM

this was a really nice informational demo. I would definitely love to see the other NAT/PAT variations. Thanks a lot for the post.

Posted by: aarkay at June 8, 2007 12:08 PM

I just found this via a google search. Great stuff. Please do more!

Posted by: Shawn Barrick at July 6, 2007 11:56 AM

Hi, I found this on google searching for nat info. I'd like to see a setup with two external interfaces natted to one internal interface.

Posted by: john at August 22, 2007 10:56 PM

WOW! LOVE IT! Studying for my CCNA 802 and failed the first test because of my NAT skills. BIG help, thanks.

Posted by: Peter at January 14, 2008 7:28 AM

I have some VLANs (all with provate IP addresses) set up in my home lab, which are going to a router on a stick. I have then got another router connected the router on a stick's serial port - which I am using to represent the ISP.
If I want to apply NAT to the VLANs, can I apply the IP NAT INSIDE command to the router on a stick fast ethernet interface, which does not have an IP address assigned, or do I have to apply IP NAT INSIDE command to all the sub interfaces I have created for each VLAN ???

Thanks for your help.

Clive

Posted by: Clive at July 26, 2008 12:01 PM

Post a comment




Remember Me?

(you may use HTML tags for style)