Thunderstone Search Appliance Manual

SSL Use SNI

Whether to use SNI (Server Name Indication) when crawling with SSL/HTTPS. SNI enables a single-IP HTTPS server to serve the correct certificate when serving multiple hosts, and is thus required by many multi-homed name-based virtual host HTTPS servers. Disabling SNI may be useful in some circumstances to connect to long-handshake-intolerant HTTPS servers that otherwise timeout, by reducing the size of the SSL ClientHello message. Default is Y. Shortening the cipher list via SSL Client Ciphers (here) is another way to work around long-handshake-intolerant servers.