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Seeing security certificate errors when visiting certain websites? Learn how to remedy this issue in Internet Explorer.
403.7 – Client certificate required; 403.8 – Site access denied; 403.9 – Too many users; 403.10 – Invalid configuration; 403.11 – Password change; 403.12 – Mapper denied access; 403.13 – Client certificate revoked; 403.14 – Directory listing denied; 403.15 – Client Access Licenses exceeded; 403.16 – Client certificate is ...
HTTP Strict Transport Security ( HSTS) is a policy mechanism that helps to protect websites against man-in-the-middle attacks such as protocol downgrade attacks [ 1] and cookie hijacking. It allows web servers to declare that web browsers (or other complying user agents) should automatically interact with it using only HTTPS connections, which ...
An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.
This reversible status can be used to note the temporary invalidity of the certificate (e.g., if the user is unsure if the private key has been lost). If, in this example, the private key was found and nobody had access to it, the status could be reinstated, and the certificate is valid again, thus removing the certificate from future CRLs.
v. t. e. Hypertext Transfer Protocol Secure ( HTTPS) is an extension of the Hypertext Transfer Protocol (HTTP). It uses encryption for secure communication over a computer network, and is widely used on the Internet. [ 1][ 2] In HTTPS, the communication protocol is encrypted using Transport Layer Security (TLS) or, formerly, Secure Sockets ...
HTTP. HTTP Public Key Pinning ( HPKP) is an obsolete Internet security mechanism delivered via an HTTP header which allows HTTPS websites to resist impersonation by attackers using misissued or otherwise fraudulent digital certificates. [ 1] A server uses it to deliver to the client (e.g. web browser) a set of hashes of public keys that must ...
Certificate authority. In cryptography, a certificate authority or certification authority ( CA) is an entity that stores, signs, and issues digital certificates. A digital certificate certifies the ownership of a public key by the named subject of the certificate. This allows others (relying parties) to rely upon signatures or on assertions ...