Thursday, June 29, 2017

Tabula Rosa Systems Blog Of 6/29/17 - Network Address Translation



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Network Address Translation
Network Address Translation (NAT) is the virtualization of Internet Protocol (IP) addresses. NAT is described in general terms in IETF RFC 1631. It conserves the number of globally valid IP addresses a company needs, and in combination with Classless Inter-Domain Routing (CIDR), has done a lot to extend the useful life of IPv4.
NAT gateways sit between two networks, the inside network and the outside network. Systems on the inside network are typically assigned IP addresses that cannot be routed to external networks (e.g., networks in the 10.0.0.0/8 block). A few externally valid IP addresses are assigned to the gateway and the gateway makes outbound traffic from an inside system appear to be coming from one of the valid external addresses.
The NAT mechanism ("natting") is a router feature, and is often part of a corporate firewall. NAT gateways can map IP addresses in several ways:
  • From a local IP address to one global IP address statically;
  • From a local IP address to any of a rotating pool of global IP addresses a company may have;
  • From a local IP address plus a particular TCP port to a global IP address or one in a pool of ports;
  • From a global IP address to any of a pool of local IP addresses on a round-robin basis.
A newer role for NAT focuses on translating IPv4 addresses to IPv6, and vice versa, to provide integration of IPv4 infrastructure and end-nodes into IPv6 environments and allow IPv6 services to interact with IPv4 systems.

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   Good Netiquette And A Green Internet To All!  =====================================================================

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In addition to this blog, Netiquette IQ has a website with great assets which are being added to on a regular basis. I have authored the premiere book on Netiquette, “Netiquette IQ - A Comprehensive Guide to Improve, Enhance and Add Power to Your Email". My new book, “You’re Hired! Super Charge Your Email Skills in 60 Minutes. . . And Get That Job!” has just been published and will be followed by a trilogy of books on Netiquette for young people. You can view my profile, reviews of the book and content excerpts at:

 www.amazon.com/author/paulbabicki

Anyone who would like to review the book and have it posted on my blog or website, please contact me paul@netiquetteiq.com.

In addition to this blog, I maintain a radio show on BlogtalkRadio  and an online newsletter via paper.li.I have established Netiquette discussion groups with Linkedin and  Yahoo I am also a member of the International Business Etiquette and Protocol Group and Minding Manners among others. I regularly consult for the Gerson Lehrman Group, a worldwide network of subject matter experts and I have been contributing to the blogs Everything Email and emailmonday . My work has appeared in numerous publications and I have presented to groups such as The Breakfast Club of NJ and  PSG of Mercer County, NJ.


Additionally, I am the president of Tabula Rosa Systems, a “best of breed” reseller of products for communications, email, network management software, security products and professional services.  Also, I am the president of Netiquette IQ. We are currently developing an email IQ rating system, Netiquette IQ, which promotes the fundamentals outlined in my book.

Over the past twenty-five years, I have enjoyed a dynamic and successful career and have attained an extensive background in IT and electronic communications by selling and marketing within the information technology market.

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