Board:   [fsxNet] Mystic BBS discussion/support
Subject: SSH down @ 2oFB - Mystic, but why?
From:    Accession(21:1/200)
Date:    Fri Oct 16, 2026 20:39

Hey paulie420!

On Fri, Oct 16 2026 18:40:44 -0700, you wrote:

 p> Several users have emailed me that SSH stopped working a few days ago. I
 p> can't figure it out - well, all I've really done is a reboot and looked in
 p> Mystic settings; everything LOOKS normal and I didn't make any changes.

 p> I don't know where to dig in deeper. Did some system update mess something
 p> up - cryptlib or something?? Guess I can check the logs to see if theres
 p> any complaints or errors; anyone had Mystic just stop SSH working
 p> abruptly?

Are you receiving all messages, or just ignoring them?

I could have sworn I replied to you about this, and even sent you a message on your BBS..

After it failing for me with the latest version of Syncterm, I tried to connect to your ssh server with a linux terminal, and had to specify the "aes128-cbc" cipher on the command line.

There is now a separate option in Syncterm "Allow AES128-CBC" and the default setting is "No". Here is what google says:

"AES-128-CBC itself is not deprecated, but CBC-mode cipher suites using AES-128 are being phased out in favor of more secure modes like AES-GCM due to vulnerabilities such as padding oracle attacks."

I don't know, but hopefully I'm at least heading you in the right direction as far as where to look.

Either way, the fact that Mystic doesn't (and may never) support anything newer than a certain cryptlib version, is not a good thing. For now, you can tell the people that are having issues to make sure to use that cipher, but if you want to make sure ssh is supported on your BBS well into the future, you may want to try to run a more current SSH server that can actually be updated when things like this happen, and just have it spawn your BBS.

If g00r00 isn't coming back, you may have to do some workarounds, because at some point it may completely stop working. Unfortunately, it most likely won't be just you that is affected by this. ;(

Regards,
Accession

.... He who laughs last, thinks slowest.
--- AmberEdit/linux 0.9.3
 * Origin: thePharcyde_ telnet://bbs.pharcyde.org (Wisconsin) (21:1/200)
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