ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY

Symptoms Unable to open https link in a browser. The web page does not open with the following error: ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY Cause Bug with ID #PPPM-5705. Will be fixed in future releases. Resolution As a workaround update nginx configuration by running the following command: plesk sbin sslmng –services=nginx –custom –ciphers=’EECDH+AESGCM+AES128:EECDH+AESGCM+AES256:EDH+AESGCM+AES128:EDH+AESGCM+AES256:EECDH+SHA256+AES128:EECDH+SHA384+AES256:EDH+SHA256+AES128:EDH+SHA256+AES256:EECDH+SHA1+AES128:EECDH+SHA1+AES256:EDH+SHA1+AES128:EDH+SHA1+AES256:EECDH+HIGH:EDH+HIGH:AESGCM+AES128:AESGCM+AES256:SHA256+AES128:SHA256+AES256:SHA1+AES128:SHA1+AES256:HIGH:!aNULL:’

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Server negotiated HTTP/2 with blacklisted suite

Symptoms HTTP/2 support is enabled on a sever. When trying to analyze a domain at SSLLabs the following error is reported: Server negotiated HTTP/2 with blacklisted suite RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA | ECDH secp256r1 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA is blacklisted for HTTP/2. Cause An nginx misconfiguration – blacklisted ciphers are used prior to acceptable ones. […]

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How to disable IPv6 for postfix service node?

Symptoms How to disable IPv6 on a Postfix Service Node? Resolution Enforcing Postfix to use IPv4 an be done by specifying inet_protocols parameter in main.cf configuration file: Open /etc/postfix/main.cf with text editor (for example, vi) on the Postfix service node. Change inet_protocols value from inet_protocols = all to inet_protocols = ipv4. Restart Postfix service: # […]

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Plesk useful terminal commands

export LANG=”en_US.UTF-8″ export LC_ALL=”en_US.UTF-8″ postmap -s /var/spool/postfix/plesk/virtual cp -Rp /var/spool/postfix/plesk /var/spool/postfix/plesk.backup cd /var/spool/postfix/plesk/ for db_file in virtual virtual_domains ; do ls -1 –color=never /var/qmail/mailnames > /tmp/domains.txt hostname -f >> /tmp/domains.txt postmap -s /var/spool/postfix/plesk/$db_file > /tmp/${db_file}_temp grep -f /tmp/domains.txt /tmp/${db_file}_temp > /tmp/$db_file postmap /tmp/$db_file mv /tmp/$db_file.db /var/spool/postfix/plesk/ done /usr/local/psa/admin/sbin/httpdmng –reconfigure-all /usr/local/psa/admin/bin/httpdmng –reconfigure-domain cdl.gr /usr/local/psa/admin/sbin/mchk –with-spam /usr/local/psa/admin/sbin/mail_auth_view […]

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