Am not a fan of disabling IPv6 but occasionally, you find software that does not play nice on systems that have dual v4 and v6 stacks running. And this is how to disable it on Ubuntu. These instructions will work on other Linux systems.
Edit /etc/sysctl.conf Add the following code or simply uncomment them if they already exist.
net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 And run the following command to effect these changes immediately.
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I had been planning on Certifying for Openstack since 2013 but at the time the certifications that where available namely Mirantis[1] and later Redhat Openstack[2] where heavily priced and you had to fly somewhere to be able to do the exam. Non-the-less, I planned to save up and put time aside to at least do one of these exams. Being in consulting business, my clients like to know that they are getting the best talent, what better way to prove this than vendor certification?
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Terminal Access Controller Access-Control System (TACACS, usually pronounced like tack-axe) refers to a family of related protocols handling remote authentication and related services for networked access control through a centralized server. The original TACACS protocol, which dates back to 1984, was used for communicating with an authentication server, common in older UNIX networks.(Source: wikipedia)
In this tutorial, I will show you how to install tacacs+ on Ubuntu using stock image in the AWS cloud.
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