I thought about that. I'm waiting to see if yesterday's change (disabling the "Link-Layer Topology Discovery Mapper I/O Driver") has any effect. One variable at a time...
From: Steven M. Caesare [mailto:[email protected]] Sent: Wednesday, September 30, 2009 11:14 AM To: NT System Admin Issues Subject: RE: Vista, 7, etc method of determining if a network connection has "Internet Access" Putting that domain in your local DNS or hosts file pointing to an identical page on a local Web server (or even localhost!) would be interesting... -sc From: Richard Stovall [mailto:[email protected]] Sent: Tuesday, September 29, 2009 2:03 PM To: NT System Admin Issues Subject: RE: Vista, 7, etc method of determining if a network connection has "Internet Access" I think I may have found the phantom "MS URL". http://technet.microsoft.com/en-us/library/cc766017%28WS.10%29.aspx describes how Vista and above reach out to http://www.msftncsi.com/ncsi.txt When I get it all figured out I'll post back to the group... RS From: Carl Houseman [mailto:[email protected]] Sent: Tuesday, September 29, 2009 10:12 AM To: NT System Admin Issues Subject: RE: Vista, 7, etc method of determining if a network connection has "Internet Access" Did you actually lose Internet access or did it just tell you it had no access? I see Vista frequently become confused about Internet access - it says I don't have it, but I actually do. It determines Internet access by checking whether it can get to a certain MS URL - if not, then it reports Local Only. So I'm guessing maybe sometimes that site isn't responding, or it doesn't re-check very often, or some such thing. Carl From: Mike Gill [mailto:[email protected]] Sent: Tuesday, September 29, 2009 12:33 PM To: NT System Admin Issues Subject: RE: Vista, 7, etc method of determining if a network connection has "Internet Access" I had a problem recently with Vista claiming "local access only", which sounds similar maybe to what you're dealing with. Vista wouldn't allow me to get online. Ultimately I updated the wireless driver which solved it. But before that I tried per this advice found on google which may be helpful to you: - disabling any IPV6 protocols bound to the NIC - netsh interface tcp set global autotuninglevel=disabled - Edit registry to add DhcpConnDisableBcastFlagToggle (1) to MKLM\System\currentcontrolset\ services\tcpip\parameters\interfaces\{GUID for wireless card} - Or use this tool instead of the regedit: http://www.reviewingit.com/index.php/content/view/61/1/ The odd thing was I had varying degrees of success with each of the items in the list. But upon reboots I would lose access again. -- Mike Gill > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of > Richard Stovall > Sent: Monday, September 28, 2009 4:18 PM > To: NT System Admin Issues > Subject: Vista, 7, etc method of determining if a network connection has > "Internet Access" > > Does anyone have a good reference that explains exactly how Vista and > newer Microsoft Operating Systems determine whether a particular NIC has > "Internet Access?" I'm talking about the really annoying 'feature' > where the network stack automagically tries to determine whether a > particular NIC has a route to the internet. > > I'm curious b/c our Pix SmartFilter plugin (now owned by McAfee) is > messing with a couple of machines and breaking their ability to actually > get to the internet. If I disable filtering for the machines' ip > addresses there's no problem at all. With filtering enabled they > completely lose their ability to get on the internet when their DHCP > leases renew and you have to disable then re-enable the NICs. > (SmartFilter of course says that there's no way it's related to their > product...) > > TIA, > RS ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
