How do I install vnstat is a console-based network traffic monitor on Ubuntu to keep a log of the 5-minute interval, hourly, daily, monthly, and yearly network traffic for the selected interface?
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How do I install vnstat network traffic monitor on Fedora Linux system to monitor my hourly, daily, weekly, and monthly bandwidth usage?
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How do I check CPU temperature in OpenSUSE Linux using a command line and GUI tools on my Thinkpad laptop?
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I have two WAN connection. The first WAN connection connects via FTTH modem. The second connection connects via 4G LTE CPE modem.
I have configured fallback and load balanced dual WAN connection on my pfSense box. However, once in while the Internet connection either one of the WAN goes down. How can I tell pfSense to send an email notification when fallback (or any) WAN connection goes down? How to configure pfSense email notification when an alert happens?
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How do I install and configure monit to restart services such as Nginx/Apache/OpenVPN server when failed on Debian or Ubuntu Linux?
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I‘m a new FreeBSD Unix system user. How can I find out the process/programs names listing on a certain port on a FreeBSD Unix systems using command line? How do I lookup the process which is currently bound to the given network port on a FreeBSD server?
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How can I analyze line rate taking log file as input on a Linux system? How do I find the IP flooding my Apache/Nginx/Lighttpd web-server on a Debian or Ubuntu Linux?
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