SNMP, or Simple Network Management Protocol, is widely used to communicate with and monitor network devices, servers, and more, all via IP. In the previous article, we installed an SNMP agent on a CentOS 6.5 server. This agent allows for the collection of data from our server and makes the information available to a remote SNMP manager. To add a little security, we’ll now change the port that SNMP listens on.
These instructions are intended specifically for listing the existing compiled PHP modules from the command line.
Your server environment may be different, but we will go over several options that you might run into. We’ll be using an Ubuntu Server with only a single PHP version on it, and two CentOS 7 servers, one with cPanel and one with InterWorx.
*ERROR*: Country Code Lookups setting MM_LICENSE_KEY must be set in
/etc/csf/csf.conf to continue using the MaxMind databases
Recently MaxMind, the company that provides the IP lookup database based on country of origin for CSF, has decided to require a free license to be able to access that database now. They had to do this, so they can conform to the new state law in California for the CCPA act.
When your company hosts a website or web app online, whether it’s an individual dedicated server or a whole server cluster, you naturally expect to have uninterrupted access at all times. However, it’s possible that in rare circumstances, your server could accidentally block your IP and prevent you from connecting and using the service.
If that has happened to you, this quick summary will provide you with all the essential information needed to verify the status of your IP. Additionally, we will offer some of the most common reasons for being blocked, as well as a few suggestions on how to unblock and whitelist your IP as quickly as possible.
Have you ever wanted to review past updates or roll back an update that broke your sites or negatively affected some aspect of your server’s operations? Well, you can accomplish this easily by using the yum history command.