Posts Categorized: Linux

Vyatta border gateway passthrough filtering

Vyatta routers bring high-quality enterprise routing in an open-source package. Like many projects it was originally designed for small office/home configurations but has grown to enterprise solutions. The current documentation on filtering between zones does not tie everything together well enough to understand zone filtering. This post will walk through a complex filter configuration for a vyatta running as a border gateway and not a small office/home gateway.

Create an SSL certificate with strong, 2048 bit encryption

When creating either a self signed certificate or a certificate request, Kerio MailServer uses 1024 bit encryption. You may however prefer stronger encryption, especially if you are using a signing authority such as GoDaddy, which requires 2048 bit encryption. In this case, you may use the free OpenSSL utility that is available with most Unix… Read more »

CentOS 5.1 Now Available for all VPS packages

I am pleased to announce that ZZ Servers now has CentOS 5.1 available as an option for VPS installation.  CentOS or Community Enterprise Operating System is a Linux distribution Enterprise-class Linux Distribution derived from Red Hat Enterprise Linux (RHEL).  CentOS conforms fully with the upstream vendors redistribution policy and aims to be 100% binary compatible…. Read more »

OpenSSL Vulnerability

A weakness has been discovered in the random number generator used by OpenSSL on Debian and Ubuntu systems. As a result of this weakness, certain encryption keys are much more common than they should be, such that an attacker could guess the key through a brute-force attack given minimal knowledge of the system. This particularly… Read more »