In this video, Todd Lammle will show you how to configure dynamic network address translation on a Cisco device, to allow internal network hosts to gain access to the Internet. By creating a pool of inside global addresses and then allowing the inside addresses to use the pool in order to get an inside global access, the inside hosts will now be able to access the Internet. He also covers the importance of creating an access list to allow inside access to the new dynamic pool.
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- [Teacher] In this next lab,…we're going to configure dynamic NAT.…Let's run out to the Corp router and configure…dynamic NAT so my PC can get to the internet.…As you're aware, to perform dynamic NAT,…we're gonna create a pool.…So I'm gonna say ip nat pool Lammle.…It doesn't matter, the name.…It's case-sensitive, though.…And I'm gonna create a pool of addresses.…Now if you were in production, you'd have…to get these addresses from your ISP.…
And so I have a start address and an ending address.…netmask 255.255.255.255/28 here, right?…Well there's another way you can type this,…doesn't matter which one.…prefix-length, and then you type in…the length of 28 either way.…So not one was better than the other.…So either way, netmask or prefix-length, your choice.…Now I've already marked my inside and outside interfaces,…but I've gotta do two other things so we can tell…which hosts can use this pool.…
Right now, it's still a one-to-one translation…like static NAT, so we're not really gaining much…by doing dynamic NAT when creating a pool.…
For more information on the CCENT exam, visit Cisco's website.
- Overview of internetworking
- The TCP/IP networking model
- Easy subnetting
- Managing Cisco IOS
- Managing Cisco networks and devices
- IP routing
- Layer 2 switching
- VLANs and InterVLAN routing
- Network address translation
Skill Level Intermediate
Internetworking devices4m 20s
3. Introduction to TCP/IP
4. Easy Subnetting
5. VLSM, Summarization, and Troubleshooting TCP/IP
6. Cisco Internetworking Operating System (IOS)
7. Managing a Cisco Internetwork
8. IP Routing
9. Layer 2 Switching
10. VLANs and InterVLAN Routing (IVR)
12. Network Address Translation (NAT)
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