BBSFirewall v1.5.0: open-source firewall for telnet/SSH BBSes, now with ufw kernel-level blocking, log search, and a security hardening. BBSFirewall is a Node.js proxy that sits in front of a telnet/SSH BBS and filters connections before they reach it.
Would you like to know more?
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https://tinyurl.com/bbsfirewall-15]
https://tinyurl.com/bbsfirewall-15