[Chilipops]

Thanks for the quick reply. While I have your expertise can you decipher what these unwanted folks may be trying to do in the following access log lines:

31.184.193.154 port-62586 - 20/Apr/2018:07:29:19 -0400 "GET / HTTP/1.0" 200 1612538

192.251.231.111 port-65535 - 20/Apr/2018:07:35:53 -0400 "POST / HTTP/1.0" 405 132

89.248.174.164 port-2505 - 20/Apr/2018:11:53:40 -0400 " /*à Cookie: mstshash=Administr" 400 148

189.63.253.55 port-48408 - 20/Apr/2018:13:49:59 -0400 "GET /cgi/common.cgi HTTP/1.1" 404 123
189.63.253.55 port-48423 - 20/Apr/2018:13:50:02 -0400 "GET /stssys.htm HTTP/1.1" 404 123
189.63.253.55 port-48433 - 20/Apr/2018:13:50:05 -0400 "GET / HTTP/1.1" 200 1612563
189.63.253.55 port-48451 - 20/Apr/2018:13:50:08 -0400 "POST /command.php HTTP/1.1" 404 123

I think the "400" series reply (i.e. 400, 404, 405) from the Calibre server at the end of these commands means the server returned a negative response to the request - is that correct?

Also - do you think if I changed the 8080 Calibre server port to something else (say port 1714 or something similar) do you think it would knock out some of this unwanted traffic?

PS... Thanks for all you have done and continue to do regarding Calibre. Absolutely the best e-book library/cataloging software in the world!