I've recently inherited an older D-Link router. I'd like to update the firmware as much as possible (currently sitting at 4.67, and I know for certain there's a 4.68 at least). Also, and possibly even more importantly, I'd like something like a useful user manual or some other resource to help figure out its advanced settings. I'm not certain that the firewall is active, if it even has one; and activating the WAN-side filtering, set to "Block" without anything set to pass, well, nothing gets through. I assumed it would behave like a normal firewall, allowing return data packets through ports opened by my system(s), but that wasn't the case.
That's some rambling. I'm hoping someone can help.