The messages are directed toward the WordPress site on my server. These are coming from the access_log, and I don't know if this should worry me or not.
There are well over a hundred lines of the same message spanning over a few seconds each time. If you don't know what I mean, here are the logs:
108.162.216.73 - - [22/Oct/2014:21:54:49 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:49 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:49 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:49 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:50 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:50 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:50 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:50 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:50 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:50 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:51 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:51 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:51 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:51 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:51 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:52 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:52 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:52 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:52 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:53 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:53 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:53 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:53 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:53 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:53 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:54 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:54 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:54 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:54 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
103.22.200.207 - - [22/Oct/2014:21:54:54 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
108.162.216.73 - - [22/Oct/2014:21:54:54 -0400] "POST /wp-login.php HTTP/1.1" 200 3467 "-" "-"
I just did a count for all instances for these two IP addresses, and it was accessed at least over 100,000 different times, since the 22nd.