← из прошлого урока
Disk and processes are under control. Now back to networking, but deeper this time, at the TLS layer. Ahead: openssl s_server, openssl s_client, and pcap, capturing the handshake step by step. This closes out "how HTTPS works".
Средний
15 мин · урок входит в курс «Средний»
HTTPS is HTTP inside TLS. When a browser opens a site, a tls-handshake happens between the tcp-handshake and the first HTTP request: the ClientHello/ServerHello exchange, ciphersuite selection, certificate validation, and key exchange. All of it is plain TCP packets, and you can watch them.
In this sandbox you bring up a local TLS server by hand (with
openssl s_server) and connect to it with a client while capturing
packets at the same time.
Чтобы запустить sandbox и пройти этот урок целиком, нужен соответствующий курс. Внутри - ещё много практических уроков того же уровня и сквозной прогресс.
дальше →
HTTPS is no longer a black box. Next up is tooling for everyday work
rather than networking: xargs and parallel run a command over a list,
the protective -print0, the difference between xargs -I and
plain batching, and parallelism.