@Hank21 For example, people were getting notifications from all of their apps, not just WhatsApp. Lots of people's phones updated (we've been at sea for about a week and a half). Some people were...

Some clients are able to access websites other than what I whitelist. I have a network made of an ER8411, an SG2218P, several SG2210Ps, and a bunch of EAP225s, all managed by an OC300 controller....

Have you tried power cycling your modem? I had a similar issue where my internet connection would work when plugged into a Netgear router/AP combo unit, but when I plugged it into my ER8411 that was...