Kaynak makinanın göndereceği UDP paketine ICMP Port Unreachable cevabı döndüren hedef makina kapalı kabul edilecektir.
Herhangi bir tepki döndürmeyen hedef makina open | filtered ( Bknz: Portların Taramalara Verebileceği Cevaplar ) kabul edilecektir.
UDP paketiyle cevap döndüren hedef makinaya ait port açık kabul edilecektir.
Bu taramayı gerçekleştirmek için aşağıdaki komut kullanılmalıdır :
nmap -sU -v [Hedef_IP]
nmap -sU -v 192.168.1.2
at 2010-08-01 18:44 EEST
Initiating ARP Ping Scan at 18:44
Scanning 192.168.1.2 [1 port]
Completed ARP Ping Scan at 18:44, 0.02s elapsed (1 total hosts)
Initiating Parallel DNS resolution of 1 host. at 18:44
Completed Parallel DNS resolution of 1 host. at 18:44, 13.00s elapsed
Initiating UDP Scan at 18:44
Scanning 192.168.1.2 [1000 ports]
Increasing send delay for 192.168.1.2 from 0 to 50 due to max_successful_tryno increase to 4
Increasing send delay for 192.168.1.2 from 50 to 100 due to max_successful_tryno increase to 5
Increasing send delay for 192.168.1.2 from 100 to 200 due to max_successful_tryno increase to 6
Increasing send delay for 192.168.1.2 from 200 to 400 due to 11 out of 11 dropped probes since last increase.
Increasing send delay for 192.168.1.2 from 400 to 800 due to 11 out of 11 dropped probes since last increase.
UDP Scan Timing: About 4.88% done; ETC: 18:55 (0:10:05 remaining)
[3]+ Stopped nmap -sU -v 192.168.1.2