> Also, I have lost the url of a website which used to analyze any given server > ( eg www.yahoo.com) for its supporting various tls extensions. You provide > the server url and it will display all the tls extns supported by that > server. If you know of any such url, could you please help me with that also. >
openssl s_client has an argument -tlsextdebug: $ openssl s_client -connect www.yahoo.com:443 -tlsextdebug CONNECTED(00000003) TLS server extension "renegotiation info" (id=65281), len=1 0001 - <SPACES/NULS> TLS server extension "EC point formats" (id=11), len=4 0000 - 03 00 01 02 .... TLS server extension "session ticket" (id=35), len=0 TLS server extension "heartbeat" (id=15), len=1
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