# Public Gateway

- [Gateway](https://fortress-labs.gitbook.io/snakepath/public-gateway/gateway.md): The Ethereum gateway is the connection between client and the relayer. Gateway implements the below given interface.
- [Client](https://fortress-labs.gitbook.io/snakepath/public-gateway/client.md): Contract user can send the payload for private execution through the send() function of the client and listen for event from the callback() function on the client contract.


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