topher
I recently setup open VPN twice. Once on a ddwrt'd router and once on a windows 7 box. Both of them, while I got them working, were extremely buggy/touchy. It would work on only certain laptops or from only certain remote locations. I think the worst part was being stumped as to where to go next. I'm a developer, so there are almost always tools to let you know what and where an error is occurring.
My question is, what are all the tools/commands I can use to tell why and where a packet/connection is getting dropped/denied and on which ports?