Wbit and Sni
Internet Safety References
SSL, Code Signin, Email, PDF, Word ... certificates
SSL and TLS are cryptographic protocols that provide authentication and encryption of data between servers, computers, and applications that run over the network (for example, a client connecting to a web server). SSL is the predecessor to TLS. Over the years, new versions of the protocols have been released to address vulnerabilities and support stronger, more secure cipher suites and algorithms. SSL was originally developed by Netscape and first hit the scene back in 1995 with SSL 2.0 (1.0 was never published). Version 2.0 was quickly superseded by SSL 3.0 in 1996 after several vulnerabilities were discovered.
TLS was introduced in 1999 as a new version of SSL and was based on SSL 3.0 Over the years, vulnerabilities have been discovered and continue to be found in legacy SSL protocols (eg POODLE, DROWN). SSL 2.0 and 3.0 are deprecated and cannot be used, SSL 1 and TLS remain
SSL Certificates are protocol independent i.e. if you are using SSL or TL Wbit and Sni S on your server you can use SSL certificates - Certificates for use with SSL and TLS - Transport Layer Security (TLS) is just a new name for SSL v4
SSL and TLS are just a handshake that happens between client and server. The handshake doesn't actually do any encryption, it just agrees on the shared secret and the type of encryption to be used.
Server Name Indication (SNI) allows a server to securely host multiple TLS certificates to multiple sites, all under a single IP address. It adds the hostname of the server (website) to the TLS handshake as an extension in the CLIENT HELLO message. This way the server knows which website should be present when using public IP addresses. In an HTTP site, the server uses the HTTP HOST headers to determine which HTTP site should be present. However, when using TLS (protocol over HTTPS), a secure session must be created before the HTTP session is created and until then there is no host header.
Server Name Indication (SNI) is an extension of the TLS protocol. The client specifies what hostname they want to connect to using the SNI extension in the TLS handshake. This allows a server (such as Apache, Nginx, or a load balancer such as HAProxy) to select the appropriate private key and certificate chain that is required to establish a connection from a list or database while placing all certificates on the same IP address.
In general, both SNI and multi-domain (also called UCC / SAN) certificates can have the same functionality - reduce the number of IP addresses required. They do this in two different ways. On the one hand, we have multi-domain certificates using a single certificate to protect multiple domains (and their subdomains) using a single IP. These domains will be listed as Subject Alternative Name or SAN in one certificate (as opposed to SNI, which uses three certificates, one for each domain). In addition, there is a limit to the number of domains that can be included in one certificate. The hosting company can also enable another user to host the site by adding it to the SAN.
In case of any changes in the certificate (revocation or renewal of the certificate, addition or removal of the SAN), it must be replaced and reconfigured for all domains. Large certificates may take longer to load and may affect page loading speed. Domains with the same certificate are visible and could create a potential conflict for competitors. For example, companies may not be comfortable using the same certificate if they are competing companies. For multi-domain certificates shared by organizations, it is not possible to issue SAN (extended validation) and OV (organization validation). All these difficulties are solved by using SNI to place several individual client certificates on one IP.
To use additional SSL certificates on your server, you need to create another virtual host. As a best practice, we recommend that you back up your existing .conf file before proceeding. You can create a new virtual host in an existing .conf file, or create a new .conf file for a new virtual host. If you are creating a new .conf file, add the following line to your existing .conf file:
Then, in the NameVirtualHost directive, specify the public IP address of your server, *: 443 or whatever port you are using for SSL (see example below).
Then point SSLCertificateFile, SSLCertificateKeyFile and SSLCertificateChainFile to the location of the certificate files for each website, as shown bel
https://jiji.com.et/bole/clothing/wbit-and-sni-v5dsnW4RPHhBrvk1LB5vsefB.html
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