PHP-FPM uses a daemon to manage the multiple PHP versions on a single server. Together we can use Apache and PHP-FPM to host multiple PHP web sites, each using a different versions of PHP at the same time. This is useful because different applications may require different versions of PHP. HP-FPM…
If you ever find that you need to send out email from your server via a relay, as you cannot send them out directly from your server’s IP (eg its been black listed). Relaying the mail via Mailgun is a good option. To do this you will need to setup…
While I fully understand the security implications of running these legacy and unsupported versions of PHP and MySQL. I had an application that had these dependancies, but I wanted to move to a supported LTS version of Ubuntu. Once you have Ubuntu 18.04 installed with Apache 2, you can use…
One common configuration issue with Nagios 3 running on Ubuntu is getting the Service Commands menu to work correctly in the web portal. By default, it is visible in the UI, but disabled on the server backend. In Ubuntu, you will recieve the cryptic error Could not stat() command file pointing to /var/lib/nagios3/rw/nagios.cmd. This can…
There is a known error when your Nagios Monitoring Server is running Ubuntu 16.04 and you are trying to monitor a server with a newer version of Ubuntu like Ubuntu 18.04. In Ubuntu 18.04, NRPE uses a 2048 bit DH key, but in earlier versions of NRPE use a 512…
Powershell is now the defacto scripting language in Windows environments. Microsoft have now decreed to all of it’s software units that they must create PowerShell cmdlet’s with full functionality to the software in all future releases. To run Powershell scripts from the Windows Task Scheduler, follow the steps below: 1) Open…
Address rewriting allows changing outgoing email ID or domain name itself. This is good for hiding internal user names. For example:SMTP user: user-01EMAIL ID: [email protected] name: server.domain.com However when user-01 send an email from shell prompt or using php it looks like it was send from [email protected] Postfix MTA offers smtp_generic_maps parameter….
If you need to find the password for an account logged into the server (eg a service account), you can run a tool called mimikatz (written by Benjamin Delpy) to do this. This tool allows you to read the clear text password stored by LSASS. I did wonder my LSASS would…
If you need to get the serial number of an HP server, and the HP Tools are got showing it, or you want to script it, you can use the WMI command line. Launch Powershell as administrator, then type in the following: This should display the serial number of the…
I had an issue today where a Linux VM’s file system was read only after a SAN issue. When a Linux server like Ubuntu looses access to its disks, the file system can go into read only to protect it from corruption. To resolve this you will need to run the following command:…