Secure memcached server to avoid DDoS amplification attacks

in Categories , , last updated March 5, 2018

I am worried that my Memcached server used for DDoS amplification attacks. How do I secure Memcached server on Linux or Unix-like system to avoid an attacker to exploit my Memcached services as an amplification vector, causing unexpected volumes of traffic to be sent to targeted networks?
Continue reading “Secure memcached server to avoid DDoS amplification attacks”

How to install KVM server on Debian Linux 9 Headless Server

in Categories , , last updated February 9, 2018

Kernel-based Virtual Machine (KVM) is a virtualization module for the Linux kernel that turns it into a hypervisor. How can I install KVM with bridged networking, setup guest operating system as the back-end virtualization technology for non-graphic Debain Linux 9.x server?
Continue reading “How to install KVM server on Debian Linux 9 Headless Server”

How to build Perl module rpm file with cpanspec on RHEL/CentOS Linux

in Categories , , , last updated February 1, 2018

I am using CentOS/RHEL 7.x heavily, and many needed CPAN modules missing. I want to distribute Perl modules from CPAN to 100s of VMs and bare metal servers. Unfortunately running cpanm Module::Name OR perl -MCPAN -e 'install Module::Name' is not an option. Is there any way to build RPM packages with rpmbuild for specific Perl module on a CentOS/RHEL 7.x server? What’s the easiest way to install a missing Perl module using the yum command?