I've just bought a DLink DSL-504 router off ebay, and am having a lot of\ntroubles with it. I've got it working with no firewall enabled - ie. I can\nuse the internet on all computers on my home network. However, the\ninterface for configuring the firewall is so un-intuitive! Has anyone any\nexperience in setting this firewall up? I want to have everything blocked -\nexcept certain specified ports (for now, let's just say port 80), and only\non a certain computer on the network. How would I do this? I found one\nexample on the internet, but that has the subnet mask as 0,0,0,0 on some of\nthe options. On my version, there is no 0,0,0,0 in the combobox.\n\nI've also tried downgrading the firmware to the version we use at work (the\nfirewall page is completely different). But halfway through the firmware\nupload a popup box says "Upload Failed". I've tried various firmwares, and\nthey all fail! Anyone experience this?\n\nBelow is a link to a screenshot of the firewall configuration page. Ignore\nthe values I've already put in - I was just playing around trying to get it\nto work.\n\n[URL]http://www.dracan.x-1.net/firewall.jpg[/URL]\n\n\nThanks for any help with this, as it's driving me nuts! :o|\n\nDan.