This article describes how to protect your Apache web server by restricting which countries can access it. We’re using Apache on CentOS 7 but Ubuntu instructions are included and are very similar. I’ve given two examples; one on whitelisting everything except what we want to block, and blacklisting everything except
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This article explains how to solve the issue of FreeRADIUS certificates expiring. In this example, we’re using CentOS 7 but the same should work on any Linux provided the paths are the same. The following commend errors due to a certificate expiring. systemctl restart freeradius SO we need to re-generate
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Your Git repo doesn’t need to be on Bitbucket or Github. You can very easily host a repository on your own systems. This article demonstrates this. We’re using CentOS here but any Linux OS should work. You just need the “git” package. As always, we’d love to read your comments.
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This article demonstrates how to use Fail2Ban to block IP addresses attempting to compromise a WordPress instance via the login process. In this walk-through, we’re using CentOS 7 and FirewallD. Just be aware that if you’re using a caching service like CloudFlare, you can’t use this method because you’ll block
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This article demonstrates how to install the new Tsunami vulnerability scanner on a Redhat-like machine such as Fedora or CentOS 8 and how to use it including an example script to scan multiple targets or subnets. Install Java: yum install java-*-openjdk-devel Download the Tsunami ZIP from here: https://github.com/google/tsunami-security-scanner/archive/master.zip Extract the
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This article explains how to install OpenVAS on Kali Linux. The difference between this method and others is the switch from “openvas” to “gvm” for naming/marketing. As you might have seen, I’ve written several articles on installing and using OpenVAS on CentOS. Don’t do it. Don’t go through the pain
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This article demonstrates how to crack a wireless network using the AirCrack-NG suite. Note that this will only work with WPA/WPA2 PSK wireless networks. That’s the limits of this generation of the AirCrack-NG suite. Only do this on a network that you own or are responsible for and have permission
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This article is quick walk-through explaining how to install Bitwarden on Fedora 32 but should work on CentOS 7 and 8 as well as RHEL. Install the docker packages: yum install docker docker-compose systemctl enable docker systemctl restart docker Download the Bitwarden scripts: curl -Lso bitwarden.sh https://go.btwrdn.co/bw-sh chmod +x bitwarden.sh
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This article shows how to install and run Nmap using the Vulscan add-on to do vulnerability assessments. Download Nmap: yum install nmap Install the Vulscan.nse script: /usr/share/nmap git clone https://github.com/scipag/vulscan vulscan Run a scan targeting the machine (in this example) “192.168.4.250”: nmap -sV –script vulscan/vulscan.nse 192.168.4.250 My output looks like
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This article shows how to install and run Nmap using the Vulners script to do vulnerability assessments. Download Nmap: yum install nmap Install the Vulners.nse script: /usr/share/nmap wget https://svn.nmap.org/nmap/scripts/vulners.nse Run a scan targetting the machine (in this example) “192.168.4.250”: nmap -sV –script vulners.nse 192.168.4.250 My output looks like this: 22/tcp
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