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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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This article demonstrates how to install and configured FreeRadius for basic authentication. By “basic authentication”, I mean we’re going to configure local users in clear text. This is the simplest way to configure FreeRadius. We’re installing this on CentOS 8. Install the software: yum install freeradius freeradius-utils Add the client
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This article is a short walk-through demonstrating the process of installing and configuring mod_security on Apache. In this tutorial, we’ll be using CentOS 7. We’re starting with a pre-configured and running web server running httpd listening on port 80 and 443. There’s no other services such as Varnishor Nginx running.
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This article is a quick note on how to improve OpenSSH server security on Redhat Enterprise Linux and CentOS 6 and 7. This is not about Passwords-v-Keys (use keys, not passwords) but rather hashes, encryption and key exchanges. The “/etc/ssh/sshd_config” file should have the following added to it to ensure
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This article focuses on installing and running RHEL8 (Red Hat Enterprise Linux 8) on VirtualBo. Specifically, this article demonstrates how to install additional driver support to ensure RHEL8 mouse movements and resolutions acre correct. You can see another good article at “https://developers.redhat.com/rhel8/install-rhel8-vbox/”. This article starts from a complete installation of
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This article is the minimal configuration for a Squid transparent proxy with SSL Interception (or bump). We’re using CentoOS 7. This article is based on the good work at “https://www.sbarjatiya.com/notes_wiki/index.php/Configure_squid-3.3_in_transparent_mode_on_CentOS_7_with_SSL_bump” with a few minor changes/corrections. Disable SELinux or put it in permissive mode. Squid works on odd ports. I will
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If you get this strange error when trying to start the Zabbix agent on a CentOS 7 or similar system, this article should help you solve the problem. The article at “https://www.zabbix.com/forum/zabbix-troubleshooting-and-problems/355498-centos-7-zabbix-3-4-7-cannot-create-semaphore-28-no-space-left-on-device” explains the issue further. However, you can jump right to the solution in “this” article. Issuing the command:
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If you need a quick LDAP and Kerberos system up and running to provide authentication and user information, FreeIPA is for you. IPA is documented at “https://www.freeipa.org/page/Main_Page”. This article demonstrates how to set up FreeIPA on CentOS 7. By the end of this article, you’ll have a working FreeIPS system
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This article shows how to configure a Redhat/CentOS 7 workstation to access a remote storage system using both NFS and CIFS. This article focuses on the workstation (client) side. The server should already be configured to share the resources. For this demonstration, the following detalis need to be know about
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