Linux comes in many flavors or distros, and each distro handles software installation differently from one another. Most GNU/Linux distro uses a package management system to manage software updates/instalation/removal in order to help users administer their Linux systems. However, many of these package management system has different interface and commands, as such users from Ubuntu […]
It seems that Bitcoin is only designed to eliminate the need for centralized issuer and central authority, but not anonymity, which is a common misconception among internet users as according to one of its developers (Jeff Garzik), transaction is recorded in public log and although the identity of the parties involved can’t be directly identified, […]
Busy websites which has a lot of insert/delete transactions may introduce fragmentation in MySQL tables. Fortunately, users and optimize mysql tables with ‘OPTIMIZE TABLE’ command, but how to execute it automatically? Here’s how: The mysql-client package in Ubuntu installation comes with a tool called mysqlcheck which is handy for optimizing table in mysql. This command […]
Here’s how you can change hostname in Ubuntu server 1. Edit /etc/hostname, and change the hostname 2. Edit /etc/hosts file, and add the hostname to 127.0.0.1, or to any local machine ip 3. run, “sudo server hostname stop”, and “sudo server hostname start”
SYN-flood attack is commonly utilized as a mean to disrupt network communication and it is a form of (Distributed Denial-of-Service) DDOS attack. RFC4987 details common mitigation to deal with SYN-flood attack. However in this post, I’m going to share you the method that I use to reduce the risk of SYN-flood attack from my department […]