In this quick how to we will look at monitoring Publicly available SMTP servers with Nagios. We will be doing basic monitoring just to see weather server resopnds on port 25 within 10 seconds. We will be using plugin called check_smtp. Prerequisites: We already have Nagios up and running and will be monitoring two SMTP…
In this example we will add check_ntp_time plugin to nrpe checks. We already have fully functioning NAGIOS monitoring server and client running NRPE. We are runnign CentOS 7 on both Nagios server and client.
Ansible is excellent tools for automating deployment and provisioning on your network systems. It comunicates over ssh and does not require any additional software installed on client side. We will take a look at very basic setup and configuration on CentsOS 7.
In this tutorial we will deploy secure LAMP based web server with multyple virtual hosts and ssl sites. We will assume sites site1.com, site2.com and ssl site site3.com
In this tutorial we will look into setting up sftp server for users on Ubuntu 16 which will be authenticating through Active Directory. This will be a two step process consisting of first connecting Ubuntu server to Active Directory and then setting up SFTP for AD users.
We had a case when one of the customers complained of being blacklisted because his whm server was sending spam. We had to act fast in order to stop this. We did the following.
During one of our Zimbra 8.6 deployment projects customer start having intermittent issue with users not being able to login to web interface with error “Network service error occurred”
We need to setup secure ftp access for VPS user so he can access his wordpress site via ftp as needed. Below are the steps that we took to accomplish this.
In this tutorial we will show how to install and configure ASSP spam Gateway with Postfix as MTA on CentOS 6.4. In this particular case this system will be used as spam gateway which will scan incoming and outgoing email for spam and viruses.
In this how to we will go over scp copy command and how it can be used to securely copy files between Linux hosts. SCP uses SSH for data transfer and also uses it for authentication. By default SCP works on port 22 which is default ssh port. For security reasons it is recommended to…