I blocked all outbound and blocked all UDP and blocked 135 through 139 as well as 445. I have set the SMTP ( TCP port 25) to only allow my network adresses to send mail just incase its possible to use the router for spam. I open the FTP ports 21 and 21 only when I want to use FTP. I have also opend the POP3 port (110) and the ports to allow MSN AOL AIM and ICQ to work. I had to locate the IP address for pprune chat and open up a link to that.
I may not have done it correctly but its the best I could do with my knowledge. Hope this info helps.
I do seem to get alot of DOS reports from my router dont know the exact significance or have any idea of what to do about them.