What is the difference between “Stealth” and “Closed” ports?
A “Stealth” port status means that something (like a firewall) is filtering this port, so we can’t tell whether the port is open or closed. A “Closed” port status means that we can directly scan the computer, and it answers that nothing is currently running on the port. • Why does my Port Scan take so long? A firewall increases the amount of time to do a Port Scan. • I ran a Port Scan, but the results I got aren’t correct. Why? Port Scan results reflect the security of any firewall, proxy, or router between you and the Internet. • I have a firewall that I know is working, but my Port Scan said that I have open ports. How is this possible? If you or your ISP/Company are routing your Internet requests through a proxy server or firewall then we may test that computer rather than your computer. You can check by running winipcfg on Windows 95/98/ME or ipconfig on Windows NT/2000/XP in a DOS shell. Compare the resulting IP address to the one we scanned. If they are not the same then we are s
