DDOS attack

[Taliriah]

I beg to differ. The server is online and functioning correctly. The page you reference shows GO/NO_GO status only. The servers are, indeed, up (GO). They are receiving so much traffic that your particular connection isn't able to get through. And if you are a server admin, you know that already. (I used to be an AIX admin, I have some familiarity myself.)

Similar to when expansions first drop and too many people are trying to connect to servers. Some connections get dropped. The DDOS packets are taking advantage of some vulnerability and are probably coming in at a higher priority than our normal connections, which is why nearly every FFXIV player isn't able to login but the DDOS packets are getting through and clogging up all available server connections.

Come now, sir.

Which boils down to the same thing that RiverSideGuy said: the servers are not online in a way that works properly for the end user. No need to be pedantic about the details.