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  • Where the hell are these Telnet floods coming from?

    From Logic44@1:103/705 to All on Thu Jul 9 14:55:09 2026
    Subject: Where the hell are these Telnet floods coming from?
    @MSGID: <6A4FEE8D.563.dove-syncops@board.lnrcbbs.net>
    @TZ: ff10
    Where are they coming from, do we know what tf they're even doing?

    I've just experienced another after only like 3 or 4 months of dead silence...

    Is there anything I can even do?

    This flood usually has an effect until I type the old "sudo systemctl stop sbbs" and wait 5 minutes, it sucks....

    ***************************************
    Logic44, Sysop of LNRC Indiana Boards

    I ride SOLO.

    Weather in Indiana: SUCKS
    ***************************************

    ---
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  • From Digital Man@1:103/705 to Logic44 on Thu Jul 9 15:46:51 2026
    Re: Where the hell are these Telnet floods coming from?
    By: Logic44 to All on Thu Jul 09 2026 02:55 pm

    Subject: Where the hell are these Telnet floods coming from?
    @MSGID: <6A4FEE8D.563.dove-syncops@board.lnrcbbs.net>
    @TZ: ff10
    Where are they coming from, do we know what tf they're even doing?

    I've just experienced another after only like 3 or 4 months of dead silence...

    Is there anything I can even do?

    Try the suggestions here: https://wiki.synchro.net/howto:block-hackers
    --
    digital man (rob)

    Breaking Bad quote #32:
    Don't think so hard it's gonna hurt your brain! - Hank Schrader
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  • From Logic44@1:103/705 to Digital Man on Tue Jul 14 01:49:45 2026
    Subject: Where the hell are these Telnet floods coming from?
    @MSGID: <6A55CDF9.576.dove-syncops@board.lnrcbbs.net>
    @REPLY: <6A5024DB.60269.sync_sys@vert.synchro.net>
    @TZ: ff10
    Re: Where the hell are these Telnet floods coming from?
    By: Digital Man to Logic44 on Thu Jul 09 2026 15:46:51

    Try the suggestions here: https://wiki.synchro.net/howto:block-hackers

    Thank you. I implemented an idle disconnect time on login of 30 seconds, hopefully that's short enough, I also set the concurrent connection maximum to 5 instead of the default.

    ***************************************
    Logic44, Sysop of LNRC Indiana Boards

    I ride SOLO.

    Weather in Indiana: SUCKS
    ***************************************

    ---
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    * Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)
  • From Digital Man@1:103/705 to Logic44 on Tue Jul 14 01:36:47 2026
    Re: Where the hell are these Telnet floods coming from?
    By: Logic44 to Digital Man on Tue Jul 14 2026 01:49 am

    Thank you. I implemented an idle disconnect time on login of 30 seconds, hopefully that's short enough, I also set the concurrent connection maximum to 5 instead of the default.

    For which server? 5 wouldn't really make sense for the terminal server.
    --
    digital man (rob)

    This Is Spinal Tap quote #42:
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  • From Logic44@1:103/705 to Digital Man on Tue Jul 14 15:30:42 2026
    Subject: Where the hell are these Telnet floods coming from?
    @MSGID: <6A568E62.578.dove-syncops@board.lnrcbbs.net>
    @REPLY: <6A55F51F.60279.sync_sys@vert.synchro.net>
    @TZ: ff10
    Re: Where the hell are these Telnet floods coming from?
    By: Digital Man to Logic44 on Tue Jul 14 2026 01:36:47

    For which server? 5 wouldn't really make sense for the terminal server.

    How do I change it for the other servers, is it not in the SCFG program? I could only find it for the terminal server...

    ***************************************
    Logic44, Sysop of LNRC Indiana Boards

    I ride SOLO.

    Weather in Indiana: SUCKS
    ***************************************

    ---
    þ Synchronet þ The Official Late Night Radio Club BBS.
    * Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)
  • From Digital Man@1:103/705 to Logic44 on Tue Jul 14 14:45:19 2026
    Re: Where the hell are these Telnet floods coming from?
    By: Logic44 to Digital Man on Tue Jul 14 2026 03:30 pm

    For which server? 5 wouldn't really make sense for the terminal server.

    How do I change it for the other servers, is it not in the SCFG program? I could only find it for the terminal server...

    I'm talking about maximum concurrent connections (the value you said you set to '5'). The maximum concurrent connections setting is also applicable and configurable in SCFG->Servers for the Web Server, FTP Server, and Mail Server.
    --
    digital man (rob)

    Steven Wright quote #7:
    A clear conscience is usually the sign of a bad memory.
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  • From phigan@1:103/705 to Logic44 on Thu Jul 16 04:52:19 2026
    Re: Where the hell are these Telnet floods coming from?
    By: Logic44 to Digital Man on Tue Jul 14 2026 01:49 am

    Thank you. I implemented an idle disconnect time on login of 30 seconds,

    You're probably expecting callers on PCs with fast connections. If, however, someone on an older computer and slower connection tries to call, they will likely have a hard time with only 30 seconds to log in :). You might not care about this, though.

    Btw, if I remember right there is a separate idle time for undetected terminals or whatever. That's probably the one that would affect bot connections but also connections from stuff like Ataris or this C64 I'm currently on.

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