erver operators can deliver SCTs by using a special TLS extension (see figure 2). In this case, the CA issues the certificate to the server operator, and the server operator submits the certificate to the log. The log sends the SCT to the server operator, and the server operator uses a TLS extension with type signed_certificate_timestamp to deliver the SCT to the client during the TLS handshake.
Monitor Servers with Zabbix
Introduction Zabbix is an enterprise open source monitoring solution for networks and applications, created by Alexei Vladishev. It is designed to monitor and track the status of various network services, servers, and other network hardware. Zabbix uses MySQL, PostgreSQL, SQLite,…
Upgrade to PHP 7 on Linux
Prerequisites This guide assumes that you are running PHP 5.x on an Ubuntu 16.04 machine, using PHP-FPM in conjunction with Nginx. It also assumes that you have a non-root user configured with sudo privileges for administrative tasks. Adding a PPA…
Troubleshooting - Warning: Possible Dns Spoofing Detected!
Sometimes, when logging into another computer, you'll get a scary looking warning like: Warning: Possible Dns Spoofing Detected! Although this looks bad, all it probably means is that the IP address of the computer you're trying to log into has changed. Because we use DHCP, this can happen every time a computer reboots. To fix the problem, delete the appropriate lines out of the ~/.ssh/known_hosts
files.