@rfagin I appreciate the reply. It turns out that by switching ACL OFF in the router settings, an external ping is able to reach the router and be returned. It seems that the default setting is ACL...

TD-8817 v8 used on Consolidated Communications ADSL line drops connection intermittently. Line tests clean (no bit errors) by ISP, and by using internal features on Comtrend ar5381u modem/router. The...