ConceptsSNI
SNI
Server Name Indication: a TLS extension that tells the server which hostname the client is connecting to, so a single IP can host TLS certificates for many names. Defenders read SNI in traffic to identify destinations.
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Host
The most substantial related concept here, covered by 8 lessons.
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HostStart here
8
lessons
Network Telemetry
6
lessons
Proxy Logs
6
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DNS-Based Detection
5
lessons
HTTPS
4
lessons
Let's Encrypt
3
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