Administration

When getting an error in Windows 2008 R2, Error 401: Unauthorized: Access is denied due to invalid credentials See – https://www.codeproject.com/Answers/418802/Unauthorized-Access-is-denied-due-to-invalid-c#answer1 Specifically Solution 6 with a minor adjustment. Right click on the folder in Explorer and choose Properties. In Security tab add ‘IIS_IUSRS’ and ‘NETWORK SERVICE’ and give full control to both user. Also check … Read more

How to Fix the Spectre on a CentOS/RHEL/Fedora/Oracle/Scientific Linux For Example, CentOS 7 Type the following yum command: CentOS 7 output You must reboot your Linux server using shutdown/reboot command: Verify all 3 CVEs (you must see output: Run the following dnf command if you are using a Fedora Linux: OR Reboot the Linux box:

I recently received an error when sending an email to google: The fix is to disable IPv6 in CentOS and postfix Resources: https://wiki.centos.org/FAQ/CentOS6#head-d47139912868bcb9d754441ecb6a8a10d41781df https://www.thegeekdiary.com/centos-rhel-7-how-to-disable-ipv6/ https://serverfault.com/questions/732187/sendmail-can-not-deliver-to-gmail-ipv6-sending-guidelines-regarding-ptr-record For Plesk: https://support.plesk.com/hc/en-us/articles/115002922789-How-to-disable-IPv6-addresses-on-a-Plesk-server-

Given a web based console of 430px height to manage a server. The web based console does not show full window preventing from seeing prompts or what commands typed in. You can change the iframe window of the console from 430px, using google developer tools, to have a height of 800px making the window very … Read more

On CentOS and Fedora systems you will want to issue the following commands to update repositories, upgrade installed packages, and install the MTR program: To test the route and connection quality of traffic to the destination host example.com, run the following command from the desired source host: Reading MTR Reports Because MTR reports contain a … Read more

Update your system: Install Apache Server with Basic Configurations Once it installs, you can start Apache: Check the installation: You will see the default CentOS 7 Apache web page, which is there for informational and testing purposes. If you cannot load – see firewall info below. Also check selinux: Selinux in CentOS7 For permanent disabling … Read more

Sometimes your OS needs to be reinstalled by your datacenter. This means that you need to mount the slaved drive in order to copy the data to the new OS drive. Here is a typical example: Login to the server and run the following to see whats mounted: As we can see above, there is … Read more