Difference between SNAT and DNAT

Forum|Forum|4 years ago
April 27, 2022
2 replies
15677 views

Dear folks,

Could you please check once Is this definition is correct as per my knowledge -

The difference between SNAT and DNAT is that, SNAT is used to allow the internal host to connect with the internet and DNAT is used by an external host to initiate connection with a private network.

SNAT VS DNAT.JPG

Thank you in advance for checking all the definitions.

Regards,

Umesh Prajapati

FortiGate

jintrah_FTNT

Staff

Dear Umesh,

The use cases are self explanatory where SNAT translates the source and DNAT translates the destination as needed.

best regards,

Jin

Debbie_FTNT

Staff & Editor

Hey Umesh,

that looks like an okay explanation of what SNAT and DNAT are.

There are other use cases in addition to what you have noted (you might want to NAT traffic through a site-to-site VPN, for example, if both sides use the same local subnet for some reason) but that's just a minor addition ^^.

Sign up

Login with SSO

Login to the community

Login with SSO