VPN

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The oldest  approach to VPNs is probably SOCKS 5, which was first developed by Aventail. SOCKS 5 is a bit different from L2TP and IPsec: It follows a proxy server model and works at the TCP socket level. To use SOCKS 5, systems must be outfitted with SOCKS 5 client software and the your organization needs to be running a SOCKS 5 server. First, a client request for services is intercepted by the SOCKS 5 client. The request is sent to the SOCKS 5 server, which checks the request against a security database. If the request is granted, the SOCKS 5 server establishes an authenticated session with the client and acts as a proxy for the client, performing the requested operations. The upside to SOCKS 5 is that it lets network managers apply specific controls on proxied traffic. Because it works at the TCP level, SOCKS 5 lets you specify which applications can cross the firewall into the Internet, and which are restricted.

The first major component that needs to be added to VPN is a directory server,   The result: The corporate net can be easily extended across the public infrastructure, blurring the traditional lines between public and private in the process.


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[Feb 15, 2007] http://www.vpntools.com/

One of the traits of a system administrator is to provide to the employees tools that can help them in their jobs. Some tools can be useful and may be costly. Some are available and can be tweaked a bit An open VPN is one of them. Nowadays, communications have become the blood flow of corporations and organizations around the world. In order to survive, they need to communicate, adequately, with their internal clients (employees) and external clients (costumers). The question, though, if I use an open VPN then how do open VPN proxys work?

Tom Dunigan's Virtual Private Networks page

VPN Insider -- superguide to Virtual Private Networks

Virtual Private Networks, 2nd Edition

VPN - Virtual Private Network - Downloadable Info

Virtual Private Networks- References

Overview of Virtual Private Networks

Web ProForum Tutorial- Intranets and Virtual Private Networks ...

Cisco Enterprise- Virtual Private Networks


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Virtual Private Networks References -- very good

VPN - Virtual Private Network - Downloadable Info

http://www.vpntools.com/


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Chapter from O'Reilly book


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Web ProForum Tutorial- VPNs

Virtual Private Networks

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Virtual Private Networks (VPNs)


FAQs

VPN FAQ


Nortel Contivity

Nortel Networks Products & Services - Contivity VPN Switches

Each Contivity VPN Switch is a single hardware device which provides routing, firewall, bandwidth management, encryption, authentication, and data integrity for secure tunneling across managed IP networks and the Internet. With Contivity VPN Switches, you can connect remote users, branch offices, suppliers, and customers with the cost and performance advantages of shared IP networks and the security and control you would expect from private networks.

This integrated product family includes the Contivity 100 for small office/home offices requiring a limited number of users; Contivity 600 for branch offices requiring up to 30 simultaneous users; Contivity 1510, 1520 and 1530 for office centers, campuses, or branch offices requiring up to 100 simultaneous users; Contivity 2600 for locations requiring up to 1000 users; and Contivity 4500 for up to 5000 users.

Tunneling Protocols


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Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 :  Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method  : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law

History:

Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds  : Larry Wall  : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOSProgramming Languages History : PL/1 : Simula 67 : C : History of GCC developmentScripting Languages : Perl history   : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history

Classic books:

The Peter Principle : Parkinson Law : 1984 : The Mythical Man-MonthHow to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Haterís Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite

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The Last but not Least Technology is dominated by two types of people: those who understand what they do not manage and those who manage what they do not understand ~Archibald Putt. Ph.D


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