I use ClamAV on my workstations. So what is ClamAV and why is it a big deal? ClamAV [site] is a powerful Free/Open source software cross platform anti-virus framework that is licensed under GNU GPL. It is based on the libclamav library and hence it’s more a framework than a product.
Do I need an anti-virus?
Now some of you *nix users may be asking yourself the obvious question
I’m running Do I need an anti-virus at all?
The short answer is “YES”. The long answer? It depends. While there are not many Linux viruses (virii?) in the wild, that’s only because the authors of malware are only interested in targeting systems with a large user base. Windows desktop user base is larger than Linux currently. That could change if the user-base of Linux increases in size significantly.
There is no silver bullet to security. Security is a mindset. It’s a practice. Having a system that detects and quarantines viruses is a single part of the set of good security practices. Although Linux isn’t prone to virus infections much, it’s a good idea to have a strong anti-virus running for these reasons:
- Your system might inadvertently play host to viruses from flash drives
- You might have a file server or a NAS server that Windows users connect to
- You might be running a mail server.
Continue reading “ClamAV – The antivirus you are looking for!”
Amazon VPC CIDR (the /16 one) – 172.31.0.0/16 is our example
Ubuntu 14.04 instance launched in a public subnet with EIP attached
- EIP of the above machine – 220.127.116.11 is our example
- SSH connection to the Ubuntu instance
Setting up the server
We are going to use a distribution of OpenVPN called OpenVPN-NL (http://openvpn.fox-it.com/) because it has more secure defaults than the standard OpenVPN installation that is distributed with Ubuntu. Also, OpenVPN-NL makes use of mbed-TLS (previously PolarSSL) instead of OpenSSL because of its compactness and ease of auditability (is that even a word?). Run all following commands as the root user: Continue reading “Accessing AWS VPC instances using OpenVPN-NL”
Passwords have always been one of the weakest links in information security. Good passwords are hard to generate and remember. Added to that it’s not good practice to use the same password for multiple sites. So one has to use completely random, reasonably long, password that contains upper and lowercase letters, numbers and special characters (phew). As if all this is not enough, several sites – like those of financial institutions – require you to change your password regularly.
All this can make it very difficult to generate, remember and maintain passwords and store passwords in a secure fashion. In this article, let’s tackle the problems with passwords one after the other.
Hopefully, I’ll cover everything that needs to be covered. If I’ve left off something, kindly point it out and I’ll edit the article to fix it as quickly as possible
Continue reading “Password Security – Primer”