1 / 7

NAT

NAT. Steve VanDeBogart. Outline. Common NAT – m:1 Rewriting based on Port Reserved Addresses Classic NAT - m:n Static/Dynamic Issues. N2.1. NAT Router. Internet. N2.1. N2.2. N1.1. N2. x. N2.3. N2.4. N2. m. N2.5. Common Nat – m:1. Problem?. Solution: Private Network.

lillian
Download Presentation

NAT

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. NAT Steve VanDeBogart

  2. Outline • Common NAT – m:1 • Rewriting based on Port • Reserved Addresses • Classic NAT - m:n • Static/Dynamic • Issues

  3. N2.1 NAT Router Internet N2.1 N2.2 N1.1 N2.x N2.3 N2.4 N2.m N2.5 Common Nat – m:1 Problem? Solution: Private Network

  4. Reserved Addresses • 1994: RFC 1597 • Non-Connected Use • 10.0.0.0 - 10.255.255.255 • 172.16.0.0 - 172.31.255.255 • 196.168.0.0 - 196.168.255.255 • Reserved on I-net?

  5. Nr.1 NAT Router Internet Nr.1 Nr.2 N1.1 . . . N1.n Nr.3 Nr.4 Nr.m Nr.5 Classic NAT – m:n Dynamic Assignment of Real IPs

  6. Static/Dynamic • Static • Assigned once – Randomly, or not • MN • Dynamic • Recycled: After last connection closes • Only N machines can have connections

  7. Issues • No Servers • Protocols with embedded IP’s • FTP • ICMP • DNS

More Related