Nshield.log

In the file nshield.log I have a lot of entries like
“DCOM Exploit attack”.

Can someone explain me where it comes from and what to do ?

Sincerely.

Have a look HERE for the definitions of DCOM and EXPLOIT

Also use the search option on this board. It is explained in other threads already.

Thank you for your answer.
I’m French and I haven’t understood all what is written.

I use Sygate personnal firewall ; I just want to know if I must add rules so that these “error” no more appear.

It is not an error. It is a security flaw in MS Windows.
Make sure your system is up-to-date with all security patches/updates from the Windows Update Website.