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Knowledge base


  • Manually issue a free 3-month SSL certificate on Windows
  • Emails are not delivered or end up in spam
  • Protection from flooding (frequent regular crawling of pages) of nginx server
  • View passwords for wifi profiles in windows 10
  • How to determine the DNS server of a domain zone
  • Difference between domain and subdomain on virtual hosting
  • Setting up network in Ubuntu 24.04
  • Limiting and controlling outgoing traffic in Linux via iptables
  • Port Forwarding from IPv4 to IPv6 in Linux Debian 12
  • Setting up php-fpm on VPS for high traffic sites
  • Requesting Current SSL Certificate from Mail Server in Linux
  • Solution: Slow authorization in ProFTPD, SSH
  • Log in dmesg icmp: ip Source Route Failed
  • Setting up connection limits for ProFTPD server
  • Increasing website performance on virtual hosting
  • Extracting files from a restore point in Windows 10, 11
  • Backup of virtual server
  • Creating Get and Post Requests in Postman
  • Error SQLSTATE[08004] [1040] Too many connections error
  • Causes and troubleshooting for long delays when connecting via SSH