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Knowledge base


  • Setting up internet via proxy in the CentOS console
  • Emulating Open Ports in Linux Debian 12 via PortSpoof
  • Reasons for high web server load
  • Managing SSH access to hosting on Business and Business + tariffs
  • Dedicated IP on virtual hosting
  • CAA DNS Record, Application and Configuration
  • Determine website hosting by domain
  • Fatal error: Allowed memory size of X bytes exhausted (tried to allocate Y bytes)
  • Reset password for user admin in Redmine
  • Updating MariaDB Server on Debian 12
  • Responsive video embedding on a website with 100% width
  • DH parameters generation time
  • Disabling version display in nginx service
  • File mapping names to IP addresses in operating systems (hosts)
  • Setting up a proxy for the apt package manager in Debian 12
  • Enabling http/3 support in nginx
  • Transferring files to the server via SSH using SFTP
  • Downloading files in the Linux console using wget
  • Monitoring a network on Linux using the tshark utility on the Command Line
  • Monitoring incoming icmp requests using tcpdump