Thanks for the info, Tom. This will help.
Quoting "Steele, Thomas C" <tste...@manteno5.org>:
We have been seeing something similar off and on with our Win7
machines - the network & sharing center would show that we did not
have a connection to the Internet, even though everything looked
good in ipconfig /all and the system tray would have a warning
symbol on the network icon. After some extensive internet research
via google, I found a lot of possible causes...
1) It seems Vista and Win7 have some kind of "phone home" pinging
mechanism that the OS uses to determine if it is reaching the
Internet. If the sites or at least responses from those sites that
the OS is looking for do not get returned to the workstation, then
the OS assumes that it has no connection to the Internet, though
internal connections to the LAN are fine. It is conceivable that a
firewall/filter (such as IPCop) might be blocking the sites the OS
is trying to hit to determine if it has Internet connectivity. If
this is the case, it should show up in a wireshark trace but I have
not tried it to confirm.
2) Some reported a specific issue with Symantec Endpoint Security
(again, possibly related to Symantec's local firewall - we don't use
Symantec so that was not our issue).
3) Apple's Bonjour service has been reported to cause this kind of
activity (though it was not installed on the machines we were having
issues with that I am aware of)
4) Problems with older versions of Intel's NIC drivers (ours were
most recent, though)
5) Problems with IPv6. By default Vista and Win 7 have native
support for both IPv6 and IPv4. If the rest of the network is only
configured for IPv4 some have suggested disabling IPv6 on the
client. This did the trick for us on one problematic workstation
(running our access control software, which may also have been part
of the problem).
In our case this is very sporadic and seems to have pretty much gone
away (maybe something fixed in a Windows update?). When it does
occur, I have found that disabling and re-enabling the network
connection seems to work.
-TS
-----Original Message-----
From: tech-geeks-boun...@tech-geeks.org
[mailto:tech-geeks-boun...@tech-geeks.org] On Behalf Of
hay...@sages.us
Sent: Saturday, September 11, 2010 10:07 AM
To: Tech-Geeks Mailing List
Subject: Re: [tech-geeks] Vista/7 not connecting to network
For those of us who are using IPCop, it looks like it is time that we
either find a solution for this issue - it arose in our district again
last week with two new laptops running Windows 7 - or find a
replacement for IPCop that does not have this issue.
Now, if one of us comes up with a solution we need to agree so share........
Quoting Charlie Niehaus <cnieh...@altamont.k12.il.us>:
I have (soon had I hope) the same issue with Windows 7 and IPCop.
Never did find a solution. There are tohers that did not see the
issue with IPCop and Windows 7 - so I am assuming it is either a
configuration issue with IPCop (Best Bet) or somthing with a switch
along the way. i was lucky enough to solve it by giving the
computer in question an external IP and trusting the user (My
Superintendent) to not break any AUP rules. Not sure how that is
going though.
----- Original Message ----- From: "Jared Lynn" <jl...@porta202.org>
To: "Tech-Geeks Mailing List" <tech-geeks@tech-geeks.org>
Sent: Friday, September 10, 2010 12:19 PM
Subject: [tech-geeks] Vista/7 not connecting to network
I'm hoping somebody on here has experienced this and has a solution
to this very annoying problem. I have a couple of newly purchased
windows 7 machines and a single vista machine that are trying to
connect to get past my Router. DHCP hands out a valid IP and points
to the right places but from there, the Default Gateway doesn't
acknowledge that the machine exists. I can ping and access all
internal servers but can not ping the Default Gateway. FYI, the
Default Gateway is our CIPAFilter that has no problems with XP or
OS X 10.6. Any comments or thoughts as to what might be occurring
would be greatly appreciated.
As always, You stay Classy Internet.
Thanks,
Jared Lynn
PORTA CUSD #202 Technology Coordinator
Email: jl...@porta202.org
Phone: 217-501-4920
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