Subj : Unwanted connections to port 23.
To : Janis Kracht
From : Phil Kimble
Date : Sun Oct 29 2017 10:21 am
>> I've since recently put my board back on port 23... and I now recall
>> why I took it off of it. I keep getting all of these connections from
>> hackers, I take it. Anyone know of a way to filter these bad
>> connections?
>> I've tried Janis' iptables suggestion, but it isn't working.
Have a look at fail2ban www.fail2ban.org claims to be a "poor man's ids".
I installed it from the yum repos on CentOS7 & configured it for 3 attempts.
If you fail to login for 3 attempts you are banned for 15 minutes. All activity
is logged. Luckily I was smart enough to setup several local accounts <Thx
Janis>
so when I forget the admin password I was still able to reset the timer for
that
acount via sudo...
