Monthly Archives: June 2019

How to Disable IPv6 in Windows Server 2012

The world is running out of Internet addresses. IPv6 is the answer to that problem, but in some cases and implementations it can cause problems of its own. There’s no reason to disable IPv6 if it’s not causing a problem. … Continue reading

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Dell X1052 External NTP

Okay, I spoke with Dell support and the issue was related to routing. The switch couldn’t get to the Internet to hit the external SNTP servers. We used putty to connect to the switch and then tried to ping the … Continue reading

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How To Secure Apache with Let’s Encrypt on CentOS 7

Step 1 — Installing the Certbot Let’s Encrypt Client To use Let’s Encrypt to obtain an SSL certificate, you first need to install Certbot and mod_ssl, an Apache module that provides support for SSL v3 encryption. The certbot package is … Continue reading

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disable and enable firewall on centos

sudo systemctl disable firewalld sudo systemctl enable firewalld

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How To Install the Apache Web Server on CentOS 7

Step 1 — Installing Apache Apache is available within CentOS’s default software repositories, which means you can install it with the yum package manager. As the non-root sudo user configured in the prerequisites, update the local Apache httpd package index … Continue reading

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