BBS:      TELESC.NET.BR
Assunto:  Re: All terminal nodes in-use
De:       Digital Man
Data:     Sun, 3 May 2026 16:07:37 -0700
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  hbRenb: hcRe: All terminal nodes in-use
  bBynb: hcGamgee bto cDenn bon cSun May 03 2026 08:55 amn

 > -=> Denn wrote to Morpheus <=-
 >
 >  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
 >  Mo> 12 will be sitting at the login prompt and all from the same IP.  I
 >  Mo> have been blocking entire blocks of IP addresses at my router, and more
 >  Mo> keep cropping up.  Lately there have been 75 or 80 different addresses
 >  Mo> each day now.  I have been blocking entire CIDR ranges after looking up
 >  Mo> the ASN and blocking all of their addresses.
 >
 >  De> have you tried fail2ban?
 >
 > I have thought about trying fail2ban many times, but just haven't ever
 > had the need, although this recent bot crap is making me think about it
 > again.
 >
 > I'm in need of some info, which surprisingly can't seem to find good
 > answers for by searching.  Here are a few questions I have if anyone
 > could answer them:
 >
 > 1.  I understand it monitors log(s) and then adds lines/rules to
 > iptables to block/ban that IP address.  But... what if you're not using
 > iptables on the BBS computer?  I'm not, because why would I be?

I'm not using it. When I have issues (on Vertrauen or reported) with bots, I add features to Synchronet to mitigate those issues. I see you're running a development build of Synchronet (v3.22a), so if you update to the latest, you should have this feature available in SCFG->Servers->Terminal Server:

[][?]
      Max Concurrent Connections      

 Maximum (Unauthenticated)     2     
 Auto-Filter Threshold         10    
 Auto-Filter Duration          1 day 


This feature has auto-banned 50 IP addresses on Vertrauen over the last 24 hours. Lower the threshold or increase the duration as you like.
-- 
                                            HYdigital man n(rob)

Rush quote #81:
Catch the witness, catch the wit, catch the spirit, catch the spit
Norco, CA WX: 67.1F, 65.0% humidity, 4 mph WSW wind, 0.00 inches rain/24hrs
n---
  mSynchronetn  hgVertrauen n hHome of Synchronet n gh[vert/cvs/bbs].synchro.net

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