[webmin-l] Clicking BROADCAST FOR SERVERS - 4 unfamiliar items

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From: Prodos (Melbourne, Australia)

Greetings!

One of my sites was subjected to a DoS (Denial of Service)
attack a few days ago and this crashed my server.

A colleague, who is a Linux expert - but I don't know how
experienced he is with WEBMIN - has helped me get things
back to normal.

I've been going through my WEBMIN settings/configurations
and checking things. Unfortunately, this is not something
I'm particularly good at.

Anyway, I went into a section called "Webmin Servers" where
there is a button called "Broadcast for servers".

I clicked on that button and 4 items appeared:

districthost.com:10000
server4.vectrahost.net:10000
gamelinkage.com:10000
deranet.com:47482

Can anyone tell me what these are?
Are these supposed to be part of my server?
They are not domain names I'm familiar with.

I don't understand what they have to do with my server.

Thanks for any help or advice about this.

Happy New Year,

PRODOS

http://prodos.thinkertothinker.com

"Boring updates on exciting projects."