Hi guys ... IÂ´m still reading the howtos of this tool .... but I still can say tha the tool "Firewall buider" (http://www.fwbuilder.org) is a very easy to use gui which will be installed on the local machine able to setup own rules for a Linksys router running a Sveasoft firmware. DonÂ´t ask me why ... but this tool offer preconfigured sets for a Sveasoft firmware upon pre5.1 not able to work with the original Linksys firmware or others. But ... unsing Sveasoft itÂ´s a great tool to administrate the Sveasoft Firewall giving her own nat and policy rules which can directly be updated to the router via SSH. Each and everyone (like me in the first 5-10 minutes) who need a quick walkthrough ... hereÂ´s a huge presentation to show how to setup own rules: http://www.fwbuilder.org/slides/phpslideshow.php?directory=linksys¤tPic=0 Remark: The presentation is still based on an earlier version of Firewall Builder which still had not the predefined Sveasoft setup (which nowÂ´s embeded). So on page "7" you take "Linksys Firewall" instead of "fw template 2", jump over pages 13-16 and continue with page 17. Hope to gave all a tip who still miss a extra menu for the configuration of the embedded firewall via a webbased menu (i.e. port forwarding).