I have recently signed up with a Wireless ISP and have the connection shared via a wired Linksys router to a 2nd pc. After the system was setup, I ran a port scan at GRC that showed I was stealth but for one Closed port. However, the WISP recently did an upgrade of their system and installed a new router. A re-scan showed I had one Open port (Telnet) and all the others were Closed -- no more stealth. This caused a little panic! I have no idea why their hardware change would have affected me in this manner. My IP is currently static (switching to dynamic soon) and I felt like I was walking around the 'Net with my pants around my ankles.
After reading several threads here on the subject, I discovered that the port scan was scanning the router, not my pc. I am curious as to why the router itself isn't stealth -- is this normal or is this something I should address?
Also, while poking around ZoneAlarm Pro's settings I noticed under 'Blocked Zone Security' > 'Advanced' under 'Internet Connection Sharing', 'This computer is NOT on an ICS/NAT gateway running ZoneAlarm Pro' was selected. Umm, I have a 2-user gateway license and the key was required to set up the router. I have changed that setting to 'This computer IS a client of an ICS/NAT gateway running ZoneAlarm Pro'. Is this correct? Isn't this where I should be?
Windows XP Pro/SP2 (and all subsequent Critical Updates)
ZoneAlarm PRo 6.1.737
Windows Firewall > Disabled
Nod32, etc., etc.
~Thanks in advance~
Operating System:Windows XP Pro
Product Name:ZoneAlarm Pro