Secured FTP – ProFTP + TLS in Ubuntu

FTP is considered as very insecure protocol because all data transferred using this protocol is passed between client and server in clear text and can be hacked by someone listening on your line. But you can easily encrypt the whole communication by enabling/forcing TLS and make FTP much more secure. This article explains how to set up ProFTPd with TLS on an Ubuntu server. Continue reading

Create self signed certificate using OpenSSL

You can create your own, self signed certificate for testing purposes using OpenSSL and two simple commands Continue reading

How to sign a Java code

Some commands in Java requires special permissions to run on client PC. This restrictions are applied especially when programming web applets. Continue reading