在apache http server停用TLS 1.0/1.1 and SSL 2.0/3.0 @外行中的外行

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How to disable outdated versions of SSL/TLS on Apache

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找到存有ＳＳＬ格式的檔案，/etc/httpd/conf.d/ssl.conf

如果有用過let's encrypt檔案會放在/etc/pki/tls/options-ssl-apache.conf

註解＃SSLProtocol all -SSLv2 -SSLv3

新增一行

SSLProtocol all -SSLv2 -SSLv3 -TLSv1 -TLSv1.1

註解＃ SSLCipherSuite HIGH:MEDIUM:!aNULL:!MD5:!SEED:!IDEA

加上

SSLCipherSuite HIGH:!aNULL:!MD5:!3DES

檢查是否有這行

SSLHonorCipherOrder on

重新啟動apache

使用指令檢查

openssl s_client -connect xxx.sso.edu.tw:443 -tls1_2

openssl s_client -connect xxx.sso.edu.tw:443 -tls1_1

openssl s_client -connect xxx.sso.edu.tw:443 -tls1

正確設定的話，只有-tls1_2會有回應

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