Tag: Firewall

Allow Access To Port in SELinux and Firewall

SELinux can be a pain at times if you don’t have a clear understanding how it works. A good chunk of resolutions around the web end up suggesting turning off SELinux completely. This, to say the least, is one of the worst things you can do to your server. Allowing access to ports through SELinux is …

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How To Configure Firewall on CentOS 7

FireSince CentOS 7 Firewalld is available by default on servers as a complete firewall solution. This guide will cover the basics of configuration and management using firewall-cmd administrative tool (if you’d rather use iptables with CentOS, follow this guide).

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How To Migrate from FirewallD to Iptables on CentOS 7

Like most other Linux distributions, CentOS 7 uses the netfilter framework inside the Linux kernel in order to access packets that flow through the network stack. This provides the necessary interface to inspect and manipulate packets in order to implement a firewall system. Most distributions use the iptables firewall, which uses the netfilter hooks to …

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