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Tony Maro
Freeradius EAP CRL Generation

Freeradius EAP CRL Generation

Once you're issuing certificates for Freeradius authentication, you need to maintain a list of those certificates that are no longer valid. Here's how.

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Posted by Tony on Apr 05, 2016 | Servers, Freeradius, Network Security
Application Whitelisting for Windows

Application Whitelisting for Windows

How are you going to protect your network from unknown threats? Application whitelisting is a good start.

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Posted by Tony on Mar 21, 2016 | Network Security, Windows
Detecting And Stopping Cryptolocker Type Viruses

Detecting And Stopping Cryptolocker Type Viruses

Cryptolocker type viruses can encrypt everything on your network shares. Here's how to detect a zero-day infection that gets past your antivirus and onto your Samba shares.

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Posted by Tony on Mar 14, 2016 | Linux Tricks, Servers, Virus, Network Security
Whitelisting IP Address Ranges with iptables and ipset

Whitelisting IP Address Ranges with iptables and ipset

If you run a firewall you know how important it is to block out the bad guys. Here's how to only allow parts of the world to even talk to you.

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Posted by Tony on Feb 25, 2016 | Servers, Network Security, networking
Using a RADIUS 3.X Server on Ubuntu 14.04 for WIFI Authentication

Using a RADIUS 3.X Server on Ubuntu 14.04 for WIFI Authentication

WPA2 Enterprise is the much more secure wifi authentication method. There's no hackers cracking login passwords if you do this, but there are a few downsides. Here's how to implement it for a small environment using FreeRadius 3.x

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Posted by Tony on Feb 16, 2016 | Servers, Network Security, Freeradius
Chrome Hates Your SSL Certificate Security

Chrome Hates Your SSL Certificate Security

Chrome has updated security and doesn't like any SSL certificate that uses SHA-1 as it's signing algorithm. That's good. Here's a quick fix for you.

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Posted by Tony on Jun 24, 2015 | Network Security, Servers
Properly Configure OpenSSH Server for Security

Properly Configure OpenSSH Server for Security

Don't get pwned. Lock down your SSH servers with PKI and other features with these few configuration changes.

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Posted by Tony on May 04, 2015 | Network Security, Servers
Making Complicated Passwords You Can Remember

Making Complicated Passwords You Can Remember

Do NOT re-use passwords. Here's how to create and remember a very complicated password, and how to manage a huge volume of different passwords.

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Posted by Tony on May 01, 2015 | Network Security
Providing Guest Wifi on a VLAN

Providing Guest Wifi on a VLAN

Separating out guest access to your network can be greatly simplified with a VLAN configuration.

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Posted by Tony on Apr 27, 2015 | Network Security
Limit Portscans with IPTABLES

Limit Portscans with IPTABLES

The Script Kiddies are out to get you. Fight back.

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Posted by Tony on Apr 20, 2015 | Network Security, Servers
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I am a CIO / CSO with a passion for Linux. I'm much more hands-on than most executives (when I have the time) and this site is my notebook of problems and solutions I've found over the years. Check out my CV Online

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