good port scanner for network security audit for windows OS ?

[jimmyhaha]

any recommendation ?

freeware is preferred..

thanks in advance..

 

[Thor86]

Nmap, Fport.

 

[netsysadmin]

Languard from GFI is a good security scanner and its free...go to the page below for more info...click on the link on the right to download it

Languard Security Scanner

 

[Saltin]

I heartily second Languard. I use it all the time. It's helped me diagnose/find many problems and rogue applications running on the network.