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Thread: SNAT and DNAT

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    #1

    Default SNAT and DNAT

    Hello,

    So I am a little bit confused as some study material define SNAT and DNAT as Source/Destination NAT while other study material define SNAT and DNAT as Static/Dynamic NAT.

    Which one is correct ?
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    #2
    Quote Originally Posted by Thoth_Dhwty View Post
    Hello,

    So I am a little bit confused as some study material define SNAT and DNAT as Source/Destination NAT while other study material define SNAT and DNAT as Static/Dynamic NAT.

    Which one is correct ?
    Source NAT is changing the source IP. When you do a static NAT, dynamic NAT, or PAT you are probably only doing a source NAT. As in, you and translating the internal private IP address to one of the organization's public IP addresses.

    Destination NAT is when you change the destination IP address. I think a good example would be if you had a VPN with another company, and tried to hit their public IP address. They may do a destination NAT at that point to send the traffic to the internal server, which has a private IP address. The return traffic from the server back to you would have a source NAT done by the other organization before returning to you.

    Does that help?

    Edit: You can also do a source AND destination NAT at the same time, but I wouldn't worry about that. Just realize that all 4 things you asked about are different.
    Last edited by hurricane1091; 03-07-2017 at 05:39 PM.
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    #3
    Alright, concepts seem pretty clear now. Thx

    It was the acronym which was confusing cuz different study material was referring to it differently.
    For example, Mike Meyers refers to SNAT as Static NAT while Professor Messer refers to SNAT as Source NAT.
    So I was wondering if I get a question like "What does SNAT stand for?" which is correct Static NAT or Source NAT?
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    #4
    Quote Originally Posted by Thoth_Dhwty View Post
    Alright, concepts seem pretty clear now. Thx

    It was the acronym which was confusing cuz different study material was referring to it differently.
    For example, Mike Meyers refers to SNAT as Static NAT while Professor Messer refers to SNAT as Source NAT.
    So I was wondering if I get a question like "What does SNAT stand for?" which is correct Static NAT or Source NAT?
    No problem. I do not think you'll encounter a problem with clarity on the test. I always refer to SNAT when talking about source NAT to be honest.
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    Good to know, cheers!
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