It appears it's a royal PITA with that router, but this may solve your problem. https://forums.att.com/t5/AT-T-Inter...ight/true#M346
Firewall
Turn off the NVG589 firewall features completely: packet filter, IP passthrough, NAT default server, firewall advanced. Your own router should be taking care of these duties. Or use them in concert with your router, as I describe here.
Firewall
Turn off the NVG589 firewall features completely: packet filter, IP passthrough, NAT default server, firewall advanced. Your own router should be taking care of these duties. Or use them in concert with your router, as I describe here.
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