kako ubraniti ?

[GM]

hi,

imam problem oz. ga imajo drugi ko vidim loge za eno domeno,in sicer se 
ponavljajo non-stop vsak dan/mesec,...

 >>
xxx.xxx.xxx.xxx- [21/Nov/2001:14:53:59 +0100] "GET 
/scripts/..%25%35%63../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 232
xxx.xxx.xxx.xxx-- - [21/Nov/2001:14:54:00 +0100] "GET 
/scripts/..%252f../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 232
[21/Nov/2001:10:42:49 +0100] "GET 
/scripts/..%c1%9c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 231

<<
non-stop nekaj takega :|
ker mi to gre hudo na zivce - kako ubraniti take in podobne ?
hvala

GM