回複：Have you set port forwarding in the new router?

i didn't change my router, the new is my modem. after i set up the new modem, i exprienced the ata problem, then reintstall router, nothing changed. I did not specifically set up port forwarding for router, but the question is i did not do it either when i used my old modem while ATA was working.
i would like to try setting up router port forwarding, could you give me some clue how to do it, I just know how to login router in my computer. Thanks for your kindly help.