If you are using one of the newer Nikon DSLR camera, you can enable Wi-Fi directly on the camera. There are few advantages to enable Wi-Fi on your DSLR. You can use your phone as a remote control to take picture. This will help you to make sure nobody is left out in your group [...]
Ramesh Natarajan
Performing fsck on non-root filesystem is fairly straight forward. But, for root filesytem, you cannot perform fsck when it is mounted. This quick tutorial explains how to force filesytem check for a root filesystem. Root Filesystem In this example, /dev/sda1 partition is the root filesystem that is mounted as / # df -h Filesystem Size [...]
DROWN stands for Decrypting RSA with Obsolete and Weakened eNcryption. This is from Vulnerability Note VU#583776: Network traffic encrypted using RSA-based SSL certificates over SSLv2 may be decrypted by the DROWN attack. This is also referred as CVE-2016-0800. To fix the problem, you should simply disable support for SSLv2 on servers that are using RSA-based [...]
LUKS is the disk encryption for Linux. First time when you encrypt a partition with LUKS (or when you select encrypt disk option during OS installation), you have to specify a password that will be used when you open the LUKS partition. But, after that, you can mount and unmount the partition as many times [...]
If you are new to Amazon AWS, and looking at their offerings, it can be bit confusing, as they have lot of services. If you are just looking to launch a virtual server on the cloud, it is relatively straight forward, and you can use Amazon’s EC2 service. But, when it comes to storage and database for [...]
US department of justice has issued an order to Apple to help FBI unlock the iPhone used by the shooter in the San Bernardino case. But, Apple is fighting that request. Basically FBI is requesting Apple to build a new version of the iPhone iOS (or a special tool) which will bypass several security features [...]
CERT has issued an vulnerability alert VU#457759 for glibc. If you have glibc installed on your system, during the DNS resolver, it may be vulnerable to stack buffer overflow. This article explains how to fix this glibc vulenrability on your server. This issue is documented here: CVE-2015-7547 Versions affected: All glibc from 2.9 to 2.22 [...]
In MySQL, when you are using InnoDB, all the tables and indexes are stored under the MySQL system tablespace. MySQL system tablespace is ibdata1, which is located under /var/lib/mysql The single ibdata1 file contains all the tables and indexes in your MySQL database. So, if you have a big database, this file size will grow [...]