機能・要件
 タスク
    s_client
 Command
 openssl.cnf

 opensslコマンドを利用して接続
 ・s_clienプログラムを利用したsslv3接続で、接続できない場合の結果など
$ openssl s_client -connect 192.168.1.xx:443 -ssl3      CONNECTED(00000003)      140133381109648:error:14094410:SSL routines:ssl3_read_bytes:sslv3\       alert handshake failure:s3_pkt.c:1493:SSL alert number 40      140133381109648:error:1409E0E5:SSL routines:ssl3_write_bytes:ssl\       handshake failure:s3_pkt.c:659:      ---      no peer certificate available      ---      No client certificate CA names sent      ---      SSL handshake has read 7 bytes and written 0 bytes      ---      New, (NONE), Cipher is (NONE)      Secure Renegotiation IS NOT supported      Compression: NONE      Expansion: NONE      No ALPN negotiated      SSL-Session:       Protocol : SSLv3       Cipher : 0000       Session-ID:       Session-ID-ctx:       Master-Key:       Key-Arg : None       Krb5 Principal: None       PSK identity: None       PSK identity hint: None       Start Time: 1609918985       Timeout : 7200 (sec)       Verify return code: 0 (ok)      ---  ・確認例
$ openssl s_client -connect localhost:443 -crlf -tls1