I'm working on a network that has an adsl connection that all the office pc's (being on a private IP network) NAT through the router/modem to get to the outside world.
It's got a firewall capability on it, disabled at the moment, allowing anything and everything through.
I've been in control of a firewall with two different offices before but that was about 4 yrs ago and I'm somewhat rusty on my firewall theory at the moment.
i know it's asking a bit, but can anyone gimme a basic set of firewall rules to allow users on the 192.168.0.* ip range to access anything in the outside world (192.168.0.0/32 etc) and a couple of basic rules to allow one ip address from the outside world to access an ip addy on the port 80 protocol on the private network?
(I know it's fairly easy and I'm fairly sure I could manage it but I'd just like to make sure I know what i'm doing first, cant practice on anything handy,y'see.)
thanks very much