SpiderSoft

How to install latest golang on EC2

If you are looking for simple way to upgrade yourt golang installation on EC2, you can experience error like that: Error: Package: golang-bin-1.5.1-0.el6.x86_64 (epel) Requires: go = 1.5.1-0.el6 Installing: golang-1.4.2-3.19.amzn1.x86_64 (amzn-main) Because on amzn-main...

TOTP security tokens and 2-Step Verification

Time-based One-time Password Algorithm (TOTP) is an algorithm that computes a one-time password from a shared secret key and the current time. The most popular implementation of this solution is Google Authenticator. This application that implements TOTP security tokens. Usually is branded...

SSH and SFTP tunnels via ProxyCommand

Recently on CyberCity nice article appeared about using middle server to connect to our destination servers. Most of servers have firewalls which  allow connect only from given pool of IP addresses. So tunnelling is very...