ID:1887447
 
(See the best response by Nadrew.)
Eternia is being hosted on BYOND 508.1290 linux (also happens in 508.1291). We haven't messed with any configurations, and by default the webclient seems to be disabled. It does not show up on the hub, nor can it be accessed directly.

Is there a config file I'm missing, or should a bug report be filed?

Sidenote: this issue is not exclusive to Eternia. It also did not seem to happen prior to updating to 508.1290.
Best response
The webclient is disabled by default, it can be enabled with the "-webclient" flag being passed to DreamDaemon.
Thanks.

That should be on the man page :P
The feature is still beta, and I don't think the 'man' pages have been updated in a very long time. Typing 'DreamDaemon' with no arguments will provide you with a list of valid flags and arguments.
'DreamDaemon' does not show the -webclient option. 'man DreamDaemon' does not either.

Oh well, no harm done. Hopefully people see this in the future and aren't as confused as I was.