T1 - MPLS and Encryption

Discussion in 'Windows Networking' started by Corey Arndt, Dec 12, 2007.

  1. Corey Arndt

    Corey Arndt Guest

    I do not know if this is an appropriate place to ask and if not I applogize
    for this and please ignore this post.

    We have a Dedicated T1/MPLS circuit between locations (different states)
    (provided by a carrier such as AT&T).

    My Question...
    Should we be encrypting the traffic that goes accross this cirucit (via
    vpn?)? If this was via Internet I would be encrypting the traffic.

    Thank You
    Corey Arndt, Dec 12, 2007
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  2. Corey Arndt

    Bill Grant Guest

    If you have a physical point to point connection (ie a dedicated cable)
    you do not need to encrypt the data using it. The data just goes in one end
    and out the other. VPN and MPLS are attempts to emulate a dedicated cable
    connection through a switched network.

    A VPN connection (Cisco or Windows for example) through the Internet
    encrypts its data because it is creating a virtual point to point connection
    by tunneling the data through the public network.

    MPLS emulates a dedicated cable by having dedicated routers keeping the
    private network traffic separate from the public traffic. (ie the traffic
    goes over the carrier's own backbone network, not the public switched
    network). Some people criticise calling it VPN since the strict definition
    of VPN (as above) includes encryption. The MPLS people saty that they are
    using "VPN-like" techniques to tunnel the data.

    If the private traffic is kept separate from the public stream the net
    effect is the same as for a dedicated cable and encryption isn't necessary.
    Bill Grant, Dec 12, 2007
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  3. Corey Arndt

    rounner Guest

    Do you trust the carriers/providers and their employees with your data?
    rounner, Dec 14, 2007
  4. Corey Arndt

    Bill Grant Guest

    That is essentially what it boils down to!
    Bill Grant, Dec 14, 2007
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