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How To Set Up a Firewall Using FirewallD on CentOS 7

Firewalld is a complete firewall solution available by default on CentOS 7 servers. In this guide, we will cover how to set up a firewall for your server and show you the basics of managing the firewall with the firewall-cmd administrative tool (if you'd rather use iptables with CentOS, follow this guide). Turning on the…

Fingerprint cannot be generated Gitlab Ubuntu

The problem is that the version of Gitlab installed from those instructions (version 6.9.2) is too old (current version is 8.14) - ssh-keygen was then outputting MD5 based Fingerprint hashes; the default is now SHA256. The solution, as garnered from - Fixing gitlab's "Fingerprint cannot be generated" error - is as follows: Edit <path-to-gitlab>/app/models/key.rb Change…

Problem CLAMAV update problem Centos Web Panel

I have the same problem since after rebuilt the postfix. Found the solution by myself. Make sure the /var/lib/clamav & /var/log/clamav with the right user & group. chown -R clam:clam /var/lib/clamav chown -R clam:clam /var/log/clamav Open the file /etc/freshclam.conf and make sure the lines are set to as below: DatabaseDirectory…

Update / overwrite files and directories recursively

Update / overwrite files and directories recursively with Linux mv - cp commands You want to update / upgrade your system. Its not easy as you think to copy or move new files with overwriting old files on linux. I know you think "--force" will help you, but not here!…