Category Archives: System Administration

Installing K-Ubuntu 16.04 with LVM+LUKS Full Encryption

Kubuntu and mostly ubuntu installations comes with a very basic installer, and does not allow you to personalize the encryption, by example, if you have windows and linux together in the same hard drive, the installation won’t allow you to dual boot it, it will force you to use the whole disk, removing the existing windows partition.

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Alice and bob are no longer online

In the past few years Diffie-Hellman has become unsupported in the main internet websites, do you know the implications?

But this is not the only thing happening, many reputable websites, including banks, social networks and search engines have chosen to continue to support for TLSv1.0 and SSLv2 “for compatibility reasons”

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Speeding up or Securing up the Encrypted Root Filesystem on Fedora 10

Fedora, and some others Linux distributions doesn’t provide you any simple way to setup the cypher properties on root filesystem.

Here, we will provide you enough information about the cypher process on fedora and one technique to speed up and/or secure up the cypher using XTS instead CBC-ESSIV
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Corporate LDAP Servers Weakness Statistics

Based in my securityfocus topic responce, and also in some information security audits that i’ve done, i think in the idea to statistical prove the attack risk level at some organization.

Number of accounts Having almost one weak key probability
10 0.401 – 40.1%
25 0.722 – 72.2%
50 0.923 – 92.3%
100 0.994 – 99.4%

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