![danscourses router on a stick danscourses router on a stick](https://www.grandmetric.com/wp-content/uploads/2020/06/DC-router-on-a-stick.png)
- #Danscourses router on a stick how to#
- #Danscourses router on a stick serial#
- #Danscourses router on a stick plus#
Remember - the Cisco IOS loopback interface is the virtual interface that helps us get around the "one interface only" issue. The 10.0.0.0 network is the LAN where you will have as many devices as you want and the devices on that LAN will rely on NAT on a stick. This network has access to the DSL modem.
#Danscourses router on a stick plus#
You are given one useable IP address on this network from the ISP, plus a block of two IP addresses on the 192.168.2.0 network. The sample configuration below for NAT on a stick is based on the following details: The local LAN is the 192.168.1.0 network.
#Danscourses router on a stick how to#
Is it valuable to know how to configure NAT on a stick? Absolutely! How do you configure NAT on a stick? Should this configuration be used on the Internet in production? No. While this might sound like a wild scenario to some, and we all agree that you just need to buy more hardware - I don't want to leave out any possible option that you could consider for using the Cisco IOS to solve a problem. You put a small hub in between the DSL modem and the 2501 Cisco router. The DSL modem is just a bridge (not a router) and the Cisco router cannot be connected directly to the cable modem because the router only has one LAN interface.
#Danscourses router on a stick serial#
But let's say that you want to use a Cisco router only, and unfortunately, all you have is a 2501 (single Ethernet and Serial interface). Usually, you would get around this by using NAT (actually PAT or NAT overload) with a home/SMB router such as Linksys, Netgear, D-Link, or Belkin. Your ISP has given you a single IP address plus a block of two other IP addresses on a different network. You have a LAN with a number of computers, a single Cisco router with one Ethernet interface, and a cable DSL modem. (I have selected this scenario because it is based on the official Cisco documentation on this topic where you can go to find more information.) While there are a number of options for using NAT on a stick, here is a scenario in which I've seen it in use. So, even though you won't find NAT on a stick in use on most enterprise networks, I think that it is important that you know what it is, how it can help you, and that it is yet another tool available to you, should you need it. However, I have seen it listed on Cisco certification exam objectives I have heard Cisco instructors talk about it and I have had readers ask me questions about it. NAT on a stick is not what I would consider a common configuration. To do this, you can use the Cisco IOS Feature Navigator. Prior to configuring NAT on a stick, you should make sure that your Cisco IOS supports this feature. You use a policy-based route (PBR) to route and NAT the traffic between the virtual interface, which is a Cisco IOS loopback interface, and the physical interface. This is still true with NAT on a stick, but we are able to get around having only a single interface because we use a virtual interface to accomplish the same task. Thus, we are really talking about NAT on a single-router interface (but that's not as catchy, is it?).įor NAT to work, a packet has to be sent from an inside NAT interface to an outside NAT interface.
![danscourses router on a stick danscourses router on a stick](https://i.ytimg.com/vi/Ps0DBuvefVM/maxresdefault.jpg)
As NAT is typically performed between two router interfaces, NAT on a stick is used to describe a NAT configuration where a single router interface is used and NAT is performed.
![danscourses router on a stick danscourses router on a stick](https://upload.wikimedia.org/wikipedia/commons/2/27/Nomin.png)
What is NAT on a stick?įirst, the "stick" is just a single router interface. I recommend that you try one of the easier NAT configurations prior to NAT on a stick.įor more information on NAT, see the Cisco Systems white paper, " How NAT Works," in TechRepublic's white paper directory. I don't recommend that you configure NAT on a stick until you have a good understanding of NAT. PAT, and "NAT overload." You can learn about these terms and how NAT works, in my article, " Set up NAT using the Cisco IOS." Additionally, you should take a look at the " Cisco IOS NAT order of Operations." For example: the difference between inside local, inside global, outside local, outside global, NAT vs. When configuring NAT, there are a number of terms and concepts you need to know. NAT is performed by a router and is commonly used to translate private IP addresses used in homes and businesses into the public IP addresses that are used on the Internet. Network Address Translation (NAT) is used to translate IP addresses from one network into IP addresses for another network. In this article, learn what NAT on a stick is and how it can help you. A well known NAT configuration is called "NAT on a stick." Besides having a funny name, NAT on a stick can be very useful to network administrators.