Ports - HELP MEEEEEEEEEE

i know rolls eyes minute closed ports thread gets started. here go again...

switched time warned wide band, puts me in double nat situation. (unsuccessfully) open ports, far have switched new cable modem (motorola sbg6580) bridge mode (see link below) can set ports apple airport utility.

http://www.dslreports.com/forum/r24807222-twc-motorola-sbg6580-bridge-mode

port mapping knowledge weak @ best. have gone network tab of airport utility, set following:

router mode: dhcp , nat
dhcp range: default
dhcp lease: empty
enable nat port mapping: checked
enable default host at: unchecked
port mapping: (for have tried plugging in different port numbers. not quite sure do. put same port number in public & private ports, , still ports closed).
enable access control: unchecked

can give appreciated!!
k

 

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