利用OpenSSL优化Linux网络通信可以通过以下几个方面来实现:
echo "TLSv1.3" >> /etc/ssl/openssl.cnf
ssl_stapling on;
ssl_stapling_verify on;
resolver 8.8.8.8 valid=300s;
resolver_timeout 5s;
SSLUseStapling on;
SSLStaplingCache "shmcb:/var/run/ocsp(128000)"
ssl_session_cache shared:SSL:10m;
ssl_session_timeout 10m;
SSLSessionCache shmcb:/var/run/ssl_scache(512000);
SSLSessionCacheTimeout 300
ssl_protocols TLSv1.2 TLSv1.3;
ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;
SSLProtocol all -SSLv2 -SSLv3;
SSLCipherSuite HIGH:!aNULL:!MD5;
SSLHonorCipherOrder on
ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
ssl_prefer_server_ciphers on;
SSLCipherSuite ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
SSLHonorCipherOrder on
echo 3 > /proc/sys/net/ipv4/tcp_fastopen
ulimit -n 65535
echo "* soft nofile 65535" >> /etc/security/limits.conf
echo "* hard nofile 65535" >> /etc/security/limits.conf
keepalive_timeout 65;
keepalive_requests 100;
KeepAlive On;
MaxKeepAliveRequests 100;
KeepAliveTimeout 5
openssl s_client -connect example.com:443 -tls1_3
通过以上这些优化措施,可以显著提高Linux OpenSSL网络连接的性能和安全性。