Anti-SSL BEAST and Renegotiation Attack capabilities refer to security features in web servers that protect against certain types of SSL/TLS attacks.
The BEAST attack (Browser Exploit Against SSL/TLS) is a type of man-in-the-middle attack that allows an attacker to decrypt and read sensitive data that is transmitted over an SSL/TLS encrypted connection. This attack takes advantage of a vulnerability in the way SSL/TLS uses block ciphers in CBC mode.
Renegotiation attacks exploit the renegotiation feature of SSL/TLS to create a man-in-the-middle attack. In this type of attack, an attacker can inject their own content into the renegotiation process and gain access to sensitive data.
Web servers that have Anti-SSL BEAST and Renegotiation Attack capabilities have implemented security measures to prevent these types of attacks. These measures can include disabling SSL/TLS renegotiation, using secure ciphers, and implementing TLS protocol version checks. These features help to protect against SSL/TLS vulnerabilities and ensure secure communication between web servers and clients.