Category Archive: networking

Jan 02 2018

Why your game console or home VoIP PBX won’t work with OPNsense or pfSense, and how to fix it

If you have been using a standard router and decide to upgrade to OPNsense or pfSense (I personally recommend OPNsense, solely because of the heavy-handed moderation in the pfSense user forum, where a user can apparently get banned for life for even a small inadvertent infraction), you may find that making a game console or …

Continue reading »

Dec 22 2017

A Bash script to rewrite the "static" IP address in the FreePBX Asterisk SIP Settings when it is changed by your ISP

This post is going to be a bit long because I first need to explain the “why” behind this script, then the script itself and how to test it after installation. Please note that the screenshots below are from earlier versions of FreePBX, and you probably will be using a more modern GUI interface, but …

Continue reading »

Sep 26 2017

How to Clear the Google Chrome DNS Cache

Flushing your DNS cache can help to fix host connection problems you may experience when accessing some web pages. To get a better Internet access performance, Google built a caching system, not only for site content but DNS as well. So yes, Google Chrome does have a built-in internal DNS caching system – a hidden …

Continue reading »

Apr 25 2017

How to Block Bad Websites

With the amount of malware currently prowling the internet it’s becoming increasingly important to protect your computer. Therefore I’ve separated my advice on how to stay safe online into two main sections. The first is the methods that I believe anyone from a novice to an expert user can use. The other section is aimed …

Continue reading »

Mar 18 2017

How to Use SSH Pipes on Linux

Like most commands on Linux, SSH can be used with input/output redirection via | (Unix Pipe). SSH can be used with this pipeline too. The basic concept here is understanding how the Unix pipeline works. When you understand the way pipes work, you can get seriously creative. This article covers what happens when you combine …

Continue reading »

Mar 11 2017

Linux iptables Firewall Simplified Examples

In the previous post, we’ve talked about how to Secure Linux Server Using Hardening Best Practices and some people ask me about firewall section which was a brief introduction about iptables firewall. Today we will discuss in detail the Linux iptables firewall and how to secure our servers traffic using that awesome tool. Source: Linux …

Continue reading »

Feb 18 2017

RJCLIP Repairs Ethernet RJ45 Clips in Seconds

It’s just a small plastic bit that simply fits on top of the broken RJ45 connector … Source: RJCLIP Repairs Ethernet RJ45 Clips in Seconds (CNXSoft – Embedded Systems News)

Jun 10 2016

Install and using netstat in Linux

netstat is a useful tool for checking your network configuration and activity. It is in fact a collection of several tools lumped together. Source: Install and using netstat in Linux | Unixmen

Dec 13 2015

How to block network traffic by country on Linux – Xmodulo

Source: How to block network traffic by country on Linux – Xmodulo

Dec 05 2015

How to disable Ipv6 on Ubuntu, Linux Mint, Debian

So if ipv6 is not supported on your network infrastructure, it might be useful to disable it all together. Why ? It can cause issues like delayed domain lookups, un-necessary attempts to connect to ipv6 addresses causing delay in network connection etc. Source: How to disable Ipv6 on Ubuntu, Linux Mint, Debian (BinaryTides) (This is …

Continue reading »

Older posts «

%d bloggers like this: