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Setup and Configured FirewallD Rules To Make Linux Servers Secure

The RHEL7 has introduce new security module/aplication/daemon for managing and support network/interface zone with named Firewalld. Firewalld replaces the iptables interface and it is compatible with both IPV version ipv4 and ipv6 and it’s related firewall settings. firewalld provides facility to configure firewall rules dynamically on linux system...
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Nginx Load Balancer on Centos/RHEL/Fedora

Nginx is is free open-source high performance load balancer with caching http server as well as reverse proxy web server, SMTP, IMAP, POP server. Nginx provide the load balancing feature nginx easily distribute the load across multiple backend servers without any technical issues which scale your infrastructure and...
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How to configure mx-gateway (mail gateway) on postfix

There are basically two main security profit to using an postfix mx-gateway. One of, it’s much easier to keep secure a single SMTP gateway from external threats than it’s keep secure multiple internal e-mail servers. Second one is, separating Internet mail from internal mail permits one to move...
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