https://dnsprivacy.org/
DNS | DNSSEC | Dataset | TLSThe DNS Privacy Project aims to improve privacy for users on the Internet.
The project is split into different groups working on DNS privacy:
The project focuses mostly on DNS over TLS. They provide overviews for the implementation status, configuration for test servers, and ongoing server monitoring, which features they provide.
https://www.immuniweb.com/ssl/
TLS | ToolScans a website for TLS configuration problems. It shows information about the certificate, ciphers, standard compliance, and industry best practices.
https://www.keylength.com/
Certificate | TLSThe website shows key length recommendations from different agencies, like NIST, NSA or BSI. You can either see the recommendations of one body or compare all for a specific year. The data contains values for symmetric encryption, factoring modulus, elliptic curve, and others.
https://observatory.mozilla.org/
Certificate | TLS | ToolWebsite quality measurement tool. The website measures the quality of HTTP headers which improve security. Additionally, it provides inspections for the TLS certificate and SSH servers. It also includes many third-party tools.
https://ssl-config.mozilla.org/
TLS | ToolCreate variable TLS configurations for all major web servers. It is specialized for each web server and server version. The configurations support different TLS configurations, depending on the needed support for old clients.
https://www.ssllabs.com/
Certificate | TLS | ToolTest the quality of a server's or a client's SSL/TLS stack. Very useful to test a server. Provides a A-F
rating scheme and shows vulnerabilities and weak protocols/cipher suites.
https://www.roe.ch/SSLsplit
Proxy | TLS | ToolSimple TLS proxy.
https://bytebybyte.dev/
TLS | TutorialThe website shows and annotates a real TLS handshake for the website. It shows each message that is transferred and explains the values that are seen. For this, a JavaScript TLS library is used that communicates with the website. The communication is then displayed.
https://quic.xargs.org/
QUIC | TLS | TutorialThe website shows an example QUIC connection and displays the messages sent by client and server. The visualization contains the transferred messages and computation steps that need to be performed on each side. The visualization contains explanations of the steps, including code snippets. Each byte for the transferred messages has further annotations to it.
https://tls13.xargs.org/
TLS | TutorialThe website shows an example TLS 1.3 session and displays the messages sent by client and server. The visualization contains the transferred messages and computation steps that need to be performed on each side. The visualization contains explanations of the steps, including code snippets. Each byte for the transferred messages has further annotations to it.
https://badssl.com/
Certificate | TLS | ToolTest the quality of a client's SSL/TLS stack. The website shows sites which should fail or pass. Bad sites, that should fail but do not, show risks in the client.
https://mitmproxy.org/
Proxy | TLS | ToolProxy framework for performing MitM attacks/transformations. Provides a Python API for scriptability.
https://testssl.sh/
Certificate | TLS | ToolTest the quality of a server's TLS stack It shows the enabled TLS versions on the server, tests for available ciphers, checks the TLS handshake, looks at the HTTP security headers, and tests for known vulnerabilities.