VPN: Virtual Private Network

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9 Δεκ 2013 (πριν από 3 χρόνια και 4 μήνες)

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VPN:

Virtual Private Network

Presented By:

Gregg Dowdy

Liz Farricker

Whitney Mayoras

Outline


Introductions


What is it?


Overview


Security/Tunneling


Advantages and Disadvantages


Demonstration

Introductions


Gregg


BSG


Student Developer


Unified Western Grocers


Retail Technology
Specialist


Liz


BSG


Business Analyst


ResNet


Network Technician


COB CRC: Tier 2/3 Support Technician


Whitney


BSG


Student Tester/Analyst


VPN: What is it?


Virtual Private Network


Remote network communication through
Internet


Used by companies/organizations who want
to communicate confidentially


Two parts:


Protected or “inside” network


“Outside” network or segment (less trustworthy)

VPN: Types


Secure VPNs use cryptographic
tunneling protocols.


IPsec, SSL/TLS, OpenVPN, PPTP, L2TP,
L2TPv3, VPN
-
Q and MPVPN


Trusted VPNs rely on the security of a
single provider’s network to protect the
traffic.


MPLS and L2F

VPN: Security


Encryption


IPSec


Authentication


User/System and Data


AAA Servers

(Authentication, Authorization, and Accounting)


Firewalls

VPN: Tunneling


Requires 3 protocols


Carrier


Default network protocol


Passenger


Original data


Encapsulation


GRE, IPSec, L2F, PPTP, L2TP

VPN: Encapsulation

Figure

1

VPN: Tunneling (cont.)


Two Basic types of tunneling


Site
-
to
-
Site


Typically uses GRE


Remote
-
Access


Typically uses PPP


VPN: Advantages


Cost Effective


Greater scalability


Easy to add/remove users


Mobility


Security

VPN: Disadvantages


Understanding of security issues


Unpredictable Internet traffic


Difficult to accommodate products
from different vendors


VPN Demonstration

Click on Start


select Network
Connections

VPN Demonstration

In Network
Connections on
the left hand side
there is a link to
“Create New
Connection”


click on this and a
wizard will pop up
assisting the user

VPN Demonstration

Select
“Connect to the
Network at my
Workplace”

VPN Demonstration

Select “Virtual
Private
Network
Connection”

VPN Demonstration

Make a name for
this connection that
you are
establishing


to
distinguish this
connection from
other VPN
connections that
might already be
established

VPN Demonstration

For this demonstration I
am trying to connect to
my wireless router off
campus therefore the IP
address that I insert is
the IP address for my
router which I can find
out by running an
ipconfig and it is the IP
address for your default
gateway

NOTE: Not all routers
will allow users to VPN
into it

VPN Demonstration

Personal
preference as to
whether or not you
want other users to
be able to use this
VPN connection
on this computer

VPN Demonstration

VPN Demonstration

VPN Demonstration

This is a profile
(username and
password) that has
already been created on
your router


which can
be created by typing in
the IP address of your
router in a web browser

VPN Demonstration

VPN Demonstration

In Start


Run insert the IP
address of the computer that
you want to access that is
connected to the router

VPN Demonstration

Using the same
username and password
already established for
the router you can
connect to this specific
computer

VPN Demonstration

These are only the files that are “shared” on this computer

How to Connect to OSU:


How to connect to OSU:


Dave Sullivan made a helpful
Tutorial



First on the
Engineering Website
you have to download
the Cisco VPN Client


One must acquire
authorization

information prior to
using the VPN service


Once registration is complete you download the
appropriate client depending on your operating system;
and follow the steps to complete the connection



References


[Figure 1]
<www.csun.edu/~vcact00f/311/termProjects/700class/VPN.ppt>



Mitchell, Bradley. "VPN Tutorial."
About.Com
. 2007. 8 Mar.
2007
<http://compnetworking.about.com/od/vpn/l/aa010701a.htm>.



Tyson, Jeff. "How Virtual Private Networks Work."
How Stuff
Works
. 6 Mar. 2007
<http://computer.howstuffworks.com/vpn.htm>.



"Virtual Private Network."
Wikipedia: the Free Encyclopedia
. 6
Mar. 2007. 9 Mar. 2007 <http://en.wikipedia.org/wiki/Vpn>.