Allow Ping on PFSense WAN interface Rumi, September 9, 2022 This article shows you how to allow ##ping## on the WAN side of your pfSense firewall. By default, ping to WAN address is disabled on pfSense for security reason. However, you may want to allow ping for different reasons, here is how: # Login to pfSense # Open Firewall >… Continue Reading
Install Percona Monitoring and Management using Docker Rumi, September 9, 2022 You can any distribution for installation- Rocky/Alma/CentoS 8 Stream. I assume you’ll use anyone of these instance. Step 1: Add Docker Repository Docker is not yet available on default repositories. Thankfully, an official repository has been provided by developers and we are going to add it first to the system…. Continue Reading
CentOS 7 Server Installation with Software RAID Rumi, September 4, 2022 Install the Operating System Boot from the USB flash drive and select Install CentOS 7 When the welcome screen of the CentOS installer appears, choose your language and just click on Continue Continue Reading
Remove DNSCACHE from zimbra services. Rumi, September 3, 2022 If you will get a prompt stating something like “Port conflict detected: 53 (zimbra-dnscache)” with a prompt to hit ENTER to continue, you can just hit enter and let the installation/upgrade run out. Once everything is running, you will see that the Zimbra DnsCahe service is in a stopped state…. Continue Reading
Install MySQL 5.7 on CentOS 7 Rumi, August 10, 2022 Preqrequsite: It’s better to have installed development tools and disable NetworkManager for a produciton envrionment. You can optionally follow the steps- Disabling NetworkManager: systemctl stop NetworkManager systemctl disable NetworkManager Install Development Tools: yum group install “Development Tools” Remove MariaDB pre-installed libraries- yum -y remove mariadb-libs Enable MySQL Repository First of… Continue Reading
Postfix SMTP Rotating IP using IPTables Rumi, August 1, 2022 I got 5 Public IPs. i’m Gonna configure them, so Postfix can use multiple interfaces/ips for outgoing smtp connections. First we need creating Interface aliases for those 5 public IPs. In my system, using centos: # cd /etc/sysconfig/network-scripts/ # cp ifcfg-eth0 ifcfg-eth0:1 Edit ifcfg-eth0:1 # vi ifcfg-eth0\:1 DEVICE=eth0 <– default… Continue Reading
vestacp open: /etc/named.conf: permission denied Rumi, August 1, 2022 This was the error I was getting after a doing a little change in the named.conf in my newly installed vesta control panel. While restarting the named, I was getting this error- [root@vesta2 ~]# systemctl status named.service ● named.service – Berkeley Internet Name Domain (DNS) Loaded: loaded (/usr/lib/systemd/system/named.service; enabled; vendor… Continue Reading
Observium Installer Script on Ubuntu 20.04 or Debian 11 Rumi, July 25, 2022 Automated Installation Observium has an automated install script for use on Ubuntu and Debian systems. Using the automated installation script is as easy as downloading it, running it and answering a few simple questions, start with: wget http://www.observium.org/observium_installscript.sh chmod +x observium_installscript.sh ./observium_installscript.sh You may need to install wget on bare… Continue Reading
Enabling Ping requests to OCI Instance Rumi, June 29, 2022 If you want to test with Ping requests you’ll need to modify the Ingress rules on the security list associated with the VCN, Subnet, network device, thing, what ever, to allow ICMP packets. Allowing ICMP traffic is not required, it’s an option. Please only take this option if you understand… Continue Reading
Generating an SSH Key Pair on Windows Using the PuTTYgen and use it on OCI with machine instance Rumi, June 29, 2022 The PuTTYgen program is part of PuTTY, an open source networking client for the Windows platform. To generate an SSH key pair on Windows using the PuTTYgen program: Download and install PuTTY or PuTTYgen.To download PuTTY or PuTTYgen, go to http://www.putty.org/ and click the You can download PuTTY here link…. Continue Reading