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Resources for the Check Point Community, by the Check Point Community.


Tim Hall has done it again! He has just released the 2nd edition of "Max Power".
Rather than get into details here, I urge you to check out this announcement post.
It's a massive upgrade, and well worth checking out. -E

 

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Thread: Dual NAT

  1. #1
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    Default Dual NAT

    Hi ALL,

    I need to know what is dual NAT in checkpoint and how it works. Can anyone please guide me.

    Thanks

  2. #2
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    Default Re: Dual NAT

    Quote Originally Posted by ankda18 View Post
    Hi ALL,

    I need to know what is dual NAT in checkpoint and how it works. Can anyone please guide me.

    Thanks
    Can you provide an example of what you're trying to do?

  3. #3
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    Default Re: Dual NAT

    Quote Originally Posted by cciesec2006 View Post
    Can you provide an example of what you're trying to do?

    Hi,

    I don't have the example. I came to know there is concept of dual NAT in checkpoint. I need to know what dual nat exactly is and how can we accomplish this.

    Thanks

  4. #4
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    Default Re: Dual NAT

    Quote Originally Posted by ankda18 View Post
    Hi,

    I don't have the example. I came to know there is concept of dual NAT in checkpoint. I need to know what dual nat exactly is and how can we accomplish this.

    Thanks
    If you can't explain what you're trying to do its going to be very hard to help you. Can you show an network diagram maybe?

  5. #5
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    Default Re: Dual NAT

    Quote Originally Posted by ankda18 View Post
    Hi,

    I don't have the example. I came to know there is concept of dual NAT in checkpoint. I need to know what dual nat exactly is and how can we accomplish this.

    Thanks
    I'm assuming the term "dual NAT" is being used to describe the NATing of both source and destination IP address in the same packet. This is referred to as "bi-directional NAT" when it happens with Automatically-generated NAT rules. I seem to recall the term "dual NAT" appearing in the CCSE courseware at some point as an alternate term describing this same operation.
    --
    Second Edition of my "Max Power" Firewall Book
    Now Available at http://www.maxpowerfirewalls.com

  6. #6
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    Default Re: Dual NAT

    Quote Originally Posted by ShadowPeak.com View Post
    I'm assuming the term "dual NAT" is being used to describe the NATing of both source and destination IP address in the same packet. This is referred to as "bi-directional NAT" when it happens with Automatically-generated NAT rules. I seem to recall the term "dual NAT" appearing in the CCSE courseware at some point as an alternate term describing this same operation.
    or it could mean something like this:

    Outbound:
    source: 192.168.1.1/32
    Destination: 10.1.1.1/32
    Translated source: 4.2.2.2/32
    Translated destination: 8.8.8.8/32

    Inbound:
    Source: 8.8.8.8/32
    Destination: 4.2.2.2/32
    Translated source: 10.1.1.1/32
    Translated destination: 192.168.1.1/32

  7. #7
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    Default Re: Dual NAT

    The problem is with this statement:

    Quote Originally Posted by ankda18 View Post
    I need to know what dual nat exactly is and how can we accomplish this.
    How do you know you need something if you don't know what it is? If you could explain why you think you need it we may be able to help.

    -E

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