SFTP is a secure alternative to FTP. Authentication is done via SSH and a secure tunnel is established for the entire file transfer session. In this article I look at how to restrict a user’s access to SFTP only and to a specific directory on the server.
Screen is a great tool for running multiple shell instances using a single SSH connection or virtual console. Here’s a quick start guide to screen.
The Debian developers announced last month that an outside team would be providing Long Term Support (LTS) for Debian 6.0 aka Squeeze. This means that you can continue using Debian Squeeze until February 2016.
authz_host is an Apache module used to restrict access based on the client’s IP address or hostname. Order Allow,Deny and Order Deny,Allow are two of its directives that determine how the following Allow from and Deny from statements are interpreted. This post hopes to explain in simple terms how to use these properly.
HostNameLookups is where Apache does a reverse DNS lookup for every connecting client’s IP address. In addition to on and off there is also a double option that does a reverse lookup followed by a forward one to see if the host name matches the IP address.