Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
CCNA Routing and Switching 200-125 Certification Guide

You're reading from   CCNA Routing and Switching 200-125 Certification Guide The ultimate solution for passing the CCNA certification and boosting your networking career

Arrow left icon
Product type Paperback
Published in Oct 2018
Publisher Packt
ISBN-13 9781787127883
Length 504 pages
Edition 1st Edition
Tools
Arrow right icon
Author (1):
Arrow left icon
Lazaro (Laz) Diaz Lazaro (Laz) Diaz
Author Profile Icon Lazaro (Laz) Diaz
Lazaro (Laz) Diaz
Arrow right icon
View More author details
Toc

Table of Contents (24) Chapters Close

Preface 1. Internetworking Models FREE CHAPTER 2. Ethernet Networking and Data Encapsulations 3. Introducing the TCP/IP 4. Subnetting in IPv4 5. Variable Length Subnet Mask and Route Summarization 6. The IOS User Interface 7. Managing the Cisco Internetwork 8. Managing Cisco Devices 9. The IP Routing Process 10. The IPv6 Protocol 11. Introduction to IPv6 Routing 12. Switching Services and Configurations 13. VLANs and Inter-VLAN Routing 14. Introduction to the EIGRP Routing Protocol 15. The World of Open Shortest Path First (OSPF) 16. Border Gateway Protocol 17. Access-Control List 18. Network Address Translation 19. Wide Area Networks 20. Advanced Networking Topics 21. Mock Test Questions
22. Assessments
23. Other Books You May Enjoy

How NAT works

There's still some information I need you to know before we start configuring the routers. The following is just some basic terminology, but it is important for the certification:

Term

Definition

Inside local

Your PC in the private network before translation

Outside local

Destination PC as it appears to your internal network

Inside global

Your PC translated by the NAT router with a public school

Outside global

Destination PC with the actual internet address

The labels in the preceding diagram depict the process of NAT. It takes your inside local private address and translates it to the inside global public address. The destination address which is the web server will always be the same; what does change is the source port, which is randomly chosen above a number of 1024, but the destination port will be the same, because we...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image