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can't we apply IPSec to a device that NAT is implemented ?

Discussion in 'Networks' started by kobem, Dec 9, 2007.

  1. kobem

    kobem Megabyte Poster

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    i have read somewhere you know using NAT , private addresses matched to public address...

    and assume if you are home and require to go to internet and NAT is implemented on your modem...
    with this, your private address doesn't appear to outside.

    Then IPSec is used for encrypting data . If you use NAT ,you can not apply IPsec why not?
     
    Certifications: CCNA
  2. Sparky
    Highly Decorated Member Award

    Sparky Zettabyte Poster Moderator

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    http://support.microsoft.com/kb/301284
     
    Certifications: MSc MCSE MCSA:M MCSA:S MCITP:EA MCTS(x5) Security+ Network+ A+
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  3. kobem

    kobem Megabyte Poster

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    hm , can't ipsec use local address of the gateway as an end point? is it a must to use
    private address of the source (real source)?
     
    Certifications: CCNA
  4. Sparky
    Highly Decorated Member Award

    Sparky Zettabyte Poster Moderator

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    It cant see the local address of the endpoint, you need to use the WAN IP address.
     
    Certifications: MSc MCSE MCSA:M MCSA:S MCITP:EA MCTS(x5) Security+ Network+ A+
    WIP: Exchange 2007\2010
  5. ffreeloader

    ffreeloader Terabyte Poster

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    How you gonna route a private IP address across the internet, Kobem?
     
    Certifications: MCSE, MCDBA, CCNA, A+
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  6. kobem

    kobem Megabyte Poster

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    for NAT
    hm allright ! packet seems to be originated from public side of modem ?

    for IPsec ?
     
    Certifications: CCNA
  7. kobem

    kobem Megabyte Poster

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    impossible thing that is. so public ip addresses are used for it
     
    Certifications: CCNA

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