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<DIV><FONT face="Courier New">First of all, a bit of clarification on how the
"system32" folder works on 64bit systems.</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New">Physically, on a 64bit system, the core dlls are
stored into two folders:</FONT></DIV>
<DIV><FONT face="Courier New">- c:\windows\system32 contains the 64bit version
of the core DLLs.</FONT></DIV>
<DIV><FONT face="Courier New">- c:\windows\sysWOW64 contains the 32bit version
of the same core DLLs.</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New">The drivers always reside under
c:\windows\system32\drivers, because on a 64bit machine all the kernel mode
drivers should be 64bit.</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New">When a 32bit application runs on a 64bit system,
the OS uses a file system redirector, so that all the requests (done by the
32bit application) to a file in c:\windows\system32 get redirected to
c:\windows\sysWOW64</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New">Going back to WinPcap (4.0.2), on a 64 bit system
npf.sys resides in c:\windows\system32\drivers (because it's a 64bit driver) and
all the user mode DLLs reside in c:\windows\sysWOW64 (since they are 32bit
DLLs). </FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New">I don't know exactly why you want to move
wpcap.dll to another folder, but it should definitely work with these
caveats:</FONT></DIV>
<DIV><FONT face="Courier New">- you CANNOT copy wpcap.dll into
c:\windows\system32, where the 64bit OS DLLs are located. Your application
will never be able to access that folder because it's hidden by the FS
redirector (this is not 100% true, as there is a way to disable the FS
redirector)</FONT></DIV>
<DIV><FONT face="Courier New">- if you try to load wpcap.dll located in
c:\windows\sysWOW64 (i.e. the default install location), you need to do
LoadLibrary("C:\\windows\\system32\\wpcap.dll", 0). </FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New">Regarding npf.sys, that file should always reside
in c:\windows\system32\drivers</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New">Regarding a silent version of the installer, for a
number of reasons this option is not available.</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New">Have a nice day</FONT></DIV>
<DIV><FONT face="Courier New">GV</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=naveen20_r@hotmail.com href="mailto:naveen20_r@hotmail.com">naveen
kumar</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=winpcap-users@winpcap.org
href="mailto:winpcap-users@winpcap.org">winpcap-users@winpcap.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, November 11, 2008 6:45
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Winpcap-users] Query Regarding
WinPcap 4.0.2.</DIV>
<DIV><BR></DIV><BR>Hi All,<BR><BR>I have a query regarding the winpcap 4.0.2.
my application is using for pocket capturing using winpcap and nps.sys driver.
Previously I was using the winpcap 3.0.0.18 in my application it was working
fine for me for both windows 2000 and windows 2003 32 bit OS. <BR><BR>I want
to support my application on windows server 2003 64 bit OS and windows vista ,
so i used the winpcap latest version 4.0.2 with my application.<BR><BR>My
application dll uses the load library windows api to load the wpcap.dll. If i
copy this wpcap.dll to the sysWOW64 directory my dll will perfectly load the
wpcap.dll and it will also load the npf.sys from system32\drivers directory
and rest of the things work fine. but my application dll is failing to load
the 4.0.2 wpcap.dll, if i copy the dll to directory other than system32 in the
64 bit OS of windows server 2003, even though i am giving the absolute path of
the location to load wpcap.dll in loadlibrary API. <BR><BR>if i use the
wpcap.dll of version 3.0.0.18 in location other than sysWOW64 my Application
dll loads the wpcap.dll, but it fails to load the npf.sys driver from the same
location where dll is present. <BR><BR>My query is wheather the latest
wpcap.dll and npf.sys should always available in the sysWOW64 and
system32\drivers directory for the 64 bit windows 2003?<BR><BR><BR>One more
Query <BR>is it possible to run the Winpcap installation as a silent
installation? <BR><BR>If you have any concerns please let me know. Thanks in
advance.<BR><BR>Regards,<BR>Naveen<BR><BR>
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