In the previous posts of this series, we looked at different ways to bypass web filters, such as Host header spoofing and domain fronting. As we’ve learned, these techniques can be detected by proxies employing TLS inspection, by checking whether the hostname in the SNI matches the one in the HTTP Host header. If they […]| Compass Security Blog
The last two blog posts in this series were about SNI spoofing and Host header spoofing. We also learned that the latter is addressed by some vendors with a technique called “Domain Fronting Detection”. But what exactly is domain fronting? This will be explained in this blog post.| blog.compass-security.com
In the last post about bypassing web filters, I discussed how SNI spoofing works and how this can also be prevented by web filters. This post is about another bypass technique called Host Header spoofing.| blog.compass-security.com
openssls_client [-help] [-ssl_config section] [-connect host:port] [-host hostname] [-port port] [-bind host:port] [-proxy host:port] [-proxy_user userid] [-proxy_pass arg] [-unix path] [-4] [-6] [-quic] [-servername name] [-noservername] [-verify depth] [-verify_return_error] [-verify_quiet] [-verifyCAfile filename] [-verifyCApath dir] [-verifyCAstore uri] [-cert filename] [-certform DER|PEM|P12] [-cert_chain filename] [-build_chain] [-CRL filename] [-CRLform DER|PEM] [-crl_download] [-key f...| docs.openssl.org
This document specifies version 1.3 of the Transport Layer Security (TLS) protocol. TLS allows client/server applications to communicate over the Internet in a way that is designed to prevent eavesdropping, tampering, and message forgery. This document updates RFCs 5705 and 6066, and obsoletes RFCs 5077, 5246, and 6961. This document also specifies new requirements for TLS 1.2 implementations.| IETF Datatracker
This document provides specifications for existing TLS extensions. It is a companion document for RFC 5246, "The Transport Layer Security (TLS) Protocol Version 1.2". The extensions specified are server_name, max_fragment_length, client_certificate_url, trusted_ca_keys, truncated_hmac, and status_request. [STANDARDS-TRACK]| IETF Datatracker
This document specifies Version 1.2 of the Transport Layer Security (TLS) protocol. The TLS protocol provides communications security over the Internet. The protocol allows client/server applications to communicate in a way that is designed to prevent eavesdropping, tampering, or message forgery. [STANDARDS-TRACK]| IETF Datatracker
curl / Docs / Tool / man page| curl.se
