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List:       ipcop-user
Subject:    Re: [IPCop-user] Win7 connection issues - gone with IPCOP 2?
From:       john s wolter <johnswolter () wolterworks ! com>
Date:       2012-09-25 15:34:07
Message-ID: CANwh-fpfJc41f-ehH9MucuGAb5TMcbt0+PyzxVCHidrpgqXT3Q () mail ! gmail ! com
[Download RAW message or body]

My overall diagnostic approach is to test from the bottom up to a working
system. While doing that I'm watching for unexpected results from ipconfig.

Jump outside the current situation.  One tool I use is a LINUX LiveCD  to
boot the host with a different OS.   Then determine if the Internet is
being dropped with LINUX too. I use the well known
http://www.sysresccd.org/SystemRescueCd_Homepage which has many utilities.
 You can check the boot logs from this.  Check any Win 7 Events logs as
well.

Starting at the bottom on Win 7 means being sure the NIC is working.  First
check the Win XP & 7 NIC power management.  Be sure the NIC is not powered
down when in power saving mode.  That drove me crazy.   Win XP laptops
would drop offline.

Try booting Win 7 with the network cable disconnected.  Also you can boot
Win 7 with a simple router like a Linksys.  Also try Win 7 boot into Safe
mode with networking.   Check ipconfig with each saving using the parameter
">ip-config.txt" from ipconfig /all or ifconfig -a in LINUX.

Try pings around the network segment then outside that segment and then to
a known Internet IP.  Post the ipconfig results in the form with changed
names to hide security detail.  Or send by mutual arrangement to one of the
IPCop developers.

Try NSLOOKUP or dig(if you have cygwin installed or the LiveCD) and see how
DNS resolution progresses with this command line tool.   Next would be the
installed protocols in Win 7.  Can IPv6 be disabled in Win 7?  Are there
any extra unused protocols that can be temporarily unchecked?

YouTube can be a source of tutorials for DNS zone & conf files.  Check
Split-Brain-DNS(Wikipedia & YouTube) which causes you to think carefully
about DNS configurations.

Cheers
John S Wolter
------------------------
LinkedIn: johnswolter <http://www.linkedin.com/in/johnswolter>


On Tue, Sep 25, 2012 at 9:20 AM, Frédéric Piard <listedemessagerie@gmail.com
> wrote:

> We never had any issue with Ipcop 1.4.x/1.9.x/2.x with windows Xp or
> Windows 7 x32 or x64.
>
> I think you have some kind of DNS problems....
> Maybe the DNS server defined in IPCop or the DNS redirectors if you have
> your own internal DNS servers (as any Windows domains have)...
>
> fred
> Le 21/09/2012 17:12, Dylan Haines a écrit :
> > Hi all, having all kinds of issues with 64-bit Win7 clients dropping
> > internet on an IPCop 1.4.18 installation. (can't upgrade to 1.4.21 due to
> > some kernel issues with my weird hardware)
> >
> >
> >
> > The Win7 clients randomly drop connection to the outside world, (internal
> > sites still work fine) which is only fixed by either a reboot, or
> manually
> > changing DNS settings on the affected client machine, and checking the
> > "Validate Settings On Exit" checkbox.
> >
> >
> >
> > (I'd sure like to figure what that Validate checkbox is doing, as
> ipconfig
> > /flushdns does not resolve the issue.)
> >
> >
> >
> > At any rate, I've been postponing moving to IPCOP 2 for some time, but am
> > now ready to go ahead with the transition. My question is does anyone
> have
> > these Win7 issues under IPCOP 2?
> >
> > If so, I can't take the risk of further disruptions and will have to
> look at
> > another firewall solution, as much as I'd prefer to stay with IPCOP.
> >
> >
> >
> > Thanks for any input.
> >
> >
> >
> > Dylan
> >
> >
> >
> > Dylan Haines
> >
> > Systems Technical Support Manager
> >
> >
> >
> > HB Studios Multimedia Ltd.
> >
> > Box 725, The Hive
> >
> > 37 Hall Street
> >
> > Lunenburg, NS  B0J 2C0
> >
> >
> >
> > Tel:  (902)634-8316 ext. 237
> >
> > Cell: (902)553-0709
> >
> > Fax: (902)634-3647
> >
> >
> >
> > www.hb-studios.com
> >
> >
> >
> >
> ------------------------------------------------------------------------------
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> > Find out how fast your code is with AppDynamics Lite.
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> > http://info.appdynamics.com/FreeJavaPerformanceDownload.html
> > _______________________________________________
> > IPCop-user mailing list
> > IPCop-user@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/ipcop-user
> >
>
>
>
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