Linux and Beyond
A changing collection of Linux-related materials. These include:
How to create and maintain a local DNSBL using RBLDNSD. The blocklists that we provide are formatted for RBLDNSD, a non-authoritative name server that is easy to use while consuming minuscule resources.
Yum is the update mechanism used by Redhat Enterprise Linux and Fedora. If you are running two or more machines that are updated by yum, then it is more efficient to create your own repository as updates need only be downloaded once for all machines. Incorporated into this process is the use of RepoView which creates a highly oprganized web interface for your repository as well as a local RSS feed of upadted packages.
Local News Server (Leafnode) How-To
Leafnode is a very simple, self-maintaining, usenet news server that is ideal for up to 20 users polling news from the ISP. The footprint is minimal; It will run on a "door-stop" gathering dust in a closet. Leafnode provides filtering that is easier to use and more powerful than news readers. Most news clients are limited to filtering on only a few headers and then rely on complicated scoring rules. Leafnode can killfile on any header.
We are finding more geographic diversity lately in spam origination. World CIDR tools are designed to help administrators create geographical blacklists and IPTables rules.
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