proftpd\[[0-9]+\]: [^[:space:]]+ \([^[:space:]]+\[[\.0-9]+\]\) - FTP session opened\.
proftpd\[[0-9]+\]: [^[:space:]]+ \([^[:space:]]+\[[\.0-9]+\]\) - FTP login timed out, disconnected\.
proftpd\[[0-9]+\]: [^[:space:]]+ \([^[:space:]]+\[[\.0-9]+\]\) - USER [^[:space:]]+: no such user found from .*\[[\.0-9]+\] to [\.0-9]+
proftpd\[[0-9]+\]: [^[:space:]]+ \([^[:space:]]+\[[\.0-9]+\]\) - no such user '[^[:space:]]+'
proftpd\[[0-9]+\]: connect from [\.0-9]+
proftpd\[[0-9]+\]: No certificate files found!
proftpd\[[0-9]+\]: [^[:space:]]+ ([^[:space:]]+\[[\.0-9]\]) - Refused PORT.* (address mismatch)\.