Red

Red is both an imperative and functional programming language introduced in 2011 by Nenad Rakocevic. Its syntax and general usage directly overlaps with that of the interpreted Rebol language (which was introduced in 1997). Yet the implementation choices of Red were geared specifically to overcoming limitations of Rebol, creating what Rakocevic calls a “full stack …

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postfix not resolving Reverse DNS

If for some reason postfix isn’t resolving reverse DNS (and giving “unknown” in headers) then you might have configured some of your daemons to run in a chroot without copying the necessary configuration files in, do this by running  the appropriate script for your platform under examples/chroot-setup.  

Disabling upnp for specific hosts in dd-wrt / openwrt routers

The DCS-932LB1 webcam from D-Link is a very naughty webcam that pretends it has turned off upnp when it hasn’t. This is a security hole, opening up your webcam to the world and D-Link don’t seem to care. The best thing to do is disable upnp completely in your router, however you might need it. …

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