BBS:      TELESC.NET.BR
Assunto:  All terminal nodes in-use
De:       Codefenix
Data:     Sat, 2 May 2026 12:42:05 -0400
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  Re: All terminal nodes in-use
  By: Morpheus to All on Sat May 02 2026 08:28 am

 Mo> I've recently started having problems with remote sites opening all
 Mo> available nodes, tying up my BBS. I have 12 nodes configured, and all 12
 Mo> will be sitting at the login prompt and all from the same IP.  I have been
 Mo> blocking entire blocks of IP addresses at my router, and more keep
 Mo> cropping up.  Lately there have been 75 or 80 different addresses each day
 Mo> now.  I have been blocking entire CIDR ranges after looking up the ASN and
 Mo> blocking all of their addresses.

Have a look at this: https://wiki.synchro.net/howto:block-hackers

If all of your nodes are filled by the same IP, it sounds like you need to set your MaxConcurrentConnections to something way lower than it is.

I lowered mine from 3 to 2 a couple days ago. We've all been seeing an increase of the thing you're describing.

Adjusting the MaxLoginInactivity and MaxDumbTermInactivity can help as well, something between 10-20 seconds.

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