[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Network](./puppeteer.protocol.network.md) > [SecurityDetails](./puppeteer.protocol.network.securitydetails.md) > [protocol](./puppeteer.protocol.network.securitydetails.protocol.md) ## Protocol.Network.SecurityDetails.protocol property Protocol name (e.g. "TLS 1.2" or "QUIC"). Signature: ```typescript protocol: string; ```