(on 02/20/2020 at 7:34pm mountain time, Frank said)
> Another suggestion, get Wireshark for sniffing traffic,
> run a sniffer trace as you are using the machine. You'll
> want to capture any IP (layer 3) traffic leaving or
> entering your machine (may want to setup filters to reduce
> capture size). This may be a way to start your analysis.
> Disable any services (daemons) running on the machine that
> are not required with a listening port:
> sudo netstat -tulpn | grep LISTEN
> above will display listening ports
> This is at least a start
Except for the netstat command, that went over my head. I have no
training in sysadmin and IT security. I'm a home user. I don't know
how to do what you suggest, or what to look for in the output.
Output to the netstat command is the same as what I put in my earlier
reply to Ed.
(my own idea) I tried wading through several thousand lines of
journalctl output. I couldn't even find my 2 logins since the last boot
(late this morning). I vaguely recall a few years ago stumbling onto
large numbers of hack attempts noted in journalctl output, but I don't
remember what to look for.
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