Subj : Telnet, TelnetS, and SSH Connections
To   : All
From : Scott Street
Date : Mon Aug 11 2025 03:50 pm

To my fellow Sysop's with Telnet, TelnetS, and SSH ports open to the Internet:

A question, perhaps even a poll,  what kind of 'protection' do you have in place for abusive connections?

For example, I already have entire country IP assignments blocked and if a host (IP) connects more then 5 times in a 60 second window, that IP is blocked, and added to my firewall's drop rules.  These seems to have reduced the number of unwanted connections over the last year or so.

Does anyone have a better scheme?

Cheers,
Scott

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