How to compile and install Tarsnap on a Ubuntu/Debian Linux

Posted on in Categories , , , , last updated January 5, 2017

A Tarsnap service is a secure online backup system for Linux, OSX, *BSD or UNIX-like system. They encrypt and store data in Amazon S3. The services also use rsync-like algorithms, and only backup data that has been changed since the last dump. The backups are protected by a security key only known to a backup operator or sysadmin. How do I install a tarsnap client on a Ubuntu or Debian Linux system?
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How To Patch and Protect OpenSSH Client Vulnerability CVE-2016-0777 and CVE-2016-0778 [ 14/Jan/2016 ]

Posted on in Categories , , , , , , , last updated January 16, 2016

A serious security problem has been found and patched in the OpenSSH software. Two vulnerabilities have been discovered in OpenSSH on 14/Jan/2016. The OpenSSH project released an ssh client bug info that can leak private keys to malicious servers. A man-in-the-middle kind of attack identified and fixed in OpenSSH are dubbed CVE-2016-0777 and CVE-2016-0778. How do I fix OpenSSH’s client vulnerability on a Linux or Unix-like operating system?

How To Patch and Protect OpenSSL Vulnerability # CVE-2015-0291 CVE-2015-0204 [ 19/March/2015 ]

Posted on in Categories , , , , , last updated March 24, 2015

On 19th March 2015, multiple high and moderate severity level vulnerabilities released in OpenSSL, a Secure Sockets Layer toolkit used in a Linux and Unix-like systems. How can I fix these vulnerabilities on a CentOS/RHEL/Ubuntu and Debian Linux based server? How do I verify that my Linux server has been fixed against the OpenSSL vulnerability?

Howto Configure PFSense Site-to-Site IPSec VPN Tunnel For Remote Access

Posted on in Categories , , last updated February 28, 2015

I work from a small office/home office and I need to set up an IPSec site-to-site VPN between a Cisco/OpeNBSD IPSec-enabled gateway and firewall running PFSense. How do I configure the VPN tunnel so that I can access remote subnet and servers behiend a Cisco firewall/router securely? How do I setup a tunnel mode configuration which will provide you with an encrypted site-to-site network, allowing networks at multiple remote locations to be able to securely communicate using my PFSense located in my SOHO?