This site DO NOT:

Log Browser connection. (Other than error message, very rare).
Log Tracker connection. (Other than error message, very rare).
Log PHProxy connection. (Other than error message, very rare). 

This site DO:

Log FTP     connection IP.
Log Email   connection IP.
Log SSH     connection IP.

This site ERASE every log, Apache, FTP, Email, SSH once a week.
Method Gutman, 35 passes.