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Disable MySQL Strict Mode

This is enabled by default, but you can disable it in one of a couple ways.

Security Advisory – TCP SACK PANIC – Kernel vulnerabilities – CVE-2019-11477, CVE-2019-11478 & CVE-2019-11479

Redhat Ubuntu reference:https://access.redhat.com/security/vulnerabilities/tcpsackhttps://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-11477.htmlhttps://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md Primarily Impacted Products Red Hat...

Zimbra Server Status shows all failed services

Step by step guide to solve problem zimbra some services are not running the following: To fix this issue:Check...

Set-Up Master-Slave Replication for PostgreSQL 9.6 on Ubuntu 16.04

What we will do: Install PostgreSQL 9.6.Configure MASTER Server.Configure SLAVE Server.Copy PostgreSQL Data from MASTER to SLAVE.Testing.

Zimbra XXE / SSRF Vulnerability Disclosure

At March 18, 2019 , Rene Ottom, Vice President Product eMail and Collaboration announced that The Zimbra Security team has been...

How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on Ubuntu 16.04

Introduction The Elastic Stack — formerly known as the ELK Stack — is a collection...

March 13, 2019: End-of-Life for All TLS-SNI-01 Validation Support

Let’s Encrypt allows subscribers to validate domain control using any one of a few different validation methods....

Netstat Cheatsheet

To view the total number of connections to a port, run the following command in ssh netstat -tuna |...

Hypervisor KVM

Have you ever wondered how a cloud works? It is the most fast-growing IT-trend which attracts billions...

How To Make Changes In resolv.conf Permanent in Ubuntu

When you change the DNS configuration using /etc/resolv.conf file, you must have noticed that the changes are not permanent. A reboot and...

Enable Nginx Status Page

Nginx status page can give realtime data about Nginx’s health. It can help you tweak few Nginx config. Status data can be...
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Safe Reboot Of Linux Using Magic SysRq Key

If you are working on kernel development, or device drivers, or running a code that could cause a kernel panic, the SysRq...

How to set a MySQL database to read-only mode

When we need to set the database as read-only on the fly (such as rebuild MySQL replication purpose) and we will use...

How to check LDAPS certificate and TLS version

Get OpenSSL (a list of 3rd party sites here; I went with this one). The connection to your DC thus: openssl...

How to run a manual backup on cPanel

You can use the /usr/local/cpanel/scripts/pkgacct script to create a cpmove archive for an account. After you create the archive, you can then restore the account on any cPanel...