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<p class=MsoNormal>I wasn’t able to find a way to create an account on
the shrew.net ticket system, so I joined the mailing group instead.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>We have a client who is having trouble staying connected to
our Juniper ISG. Only this client is affected, and based on the trace utility
IKEd logs, <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Client’s O/S windows 7 64 bit<o:p></o:p></p>
<p class=MsoNormal>Shrew version: 2.1.7 (latest stable)<o:p></o:p></p>
<p class=MsoNormal>IPSEC based VPN w/ preshared key<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Any more information you need please let me know. I have
been testing this client’s VPN connection from another PC running windows
XP and it has been working fine. I am using the same version of the shrew.net
dialer. I should also mention that this user has a cisco VPN dialer using SSL
authentication, which is working fine.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Microsoft Sans Serif","sans-serif"'>So
it looks like the problem starts when the ACK packet comes back to the client
and the ShrewSoft IM Filter Driver fails (vflt device attach failed).
(vfilter.sys)</span> I’ve been googling for vfilter.sys and have seen a
lot of complaints of BSOD ‘s for windows 7 users.<o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>Below is the sequence from the
logs:<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 ii : sending
peer DPDV1-R-U-THERE notification<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 ii : - 192.168.2.10:4500
-> x.x.x.x:4500<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 ii : -
isakmp spi = 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 ii : - data
size 4<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 >= :
cookies 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 >= :
message ef7335ab<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 ii :
processing informational packet ( 92 bytes )<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 =< :
cookies 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 =< :
message 32e0338a<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 ii :
received peer DPDV1-R-U-THERE-ACK notification<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 ii : - x.x.x.x:4500
-> 192.168.2.10:4500<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 ii : -
isakmp spi = 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:47 ii : - data
size 4<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:54 !! : vflt
device attach failed<o:p></o:p></span></b></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:55 !! : vflt
device attach failed<o:p></o:p></span></b></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:56 !! : vflt
device attach failed<o:p></o:p></span></b></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 19:47:57 !! : vflt
device attach failed<o:p></o:p></span></b></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:05 ii : sending
peer DPDV1-R-U-THERE notification<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:05 ii : -
192.168.2.10:4500 -> x.x.x.x:4500<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:05 ii : - isakmp
spi = 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:05 ii : - data
size 4<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:05 !! : vflt
device attach failed<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:11 !! :
get_vfwd - failed to obtain valid route ( dest 192.168.2.10 )<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:11 !! : no arp
entry for src : 192.168.2.10<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:11 >= :
cookies 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:11 >= :
message d66e7846<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:11 !! :
get_vfwd - failed to obtain valid route ( dest 192.168.2.10 )<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:11 !! : no arp
entry for src : 192.168.2.10<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:11 !! :
get_vfwd - failed to obtain valid route ( dest 192.168.2.10 )<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:11 !! : no arp
entry for src : 192.168.2.10<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:12 ii : vflt
device attached<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:26 ii : sending
peer DPDV1-R-U-THERE notification<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:26 ii : -
192.168.2.10:4500 -> x.x.x.x:4500<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:26 ii : -
isakmp spi = 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:26 ii : - data
size 4<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:26 >= :
cookies 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:26 >= :
message df989eb9<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:30 ii : sending
peer DPDV1-R-U-THERE notification<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:30 ii : -
192.168.2.10:4500 -> x.x.x.x:4500<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:30 ii : -
isakmp spi = 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:30 ii : - data
size 4<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:30 >= :
cookies 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:30 >= :
message e90fa7f3<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:33 ii : sending
peer DPDV1-R-U-THERE notification<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:33 ii : -
192.168.2.10:4500 -> x.x.x.x:4500<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:33 ii : -
isakmp spi = 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:33 ii : - data
size 4<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:33 >= :
cookies 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:33 >= :
message 598affb6<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:35 ii : sending
peer DPDV1-R-U-THERE notification<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:35 ii : -
192.168.2.10:4500 -> x.x.x.x:4500<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:35 ii : -
isakmp spi = 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:35 ii : - data
size 4<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:35 >= :
cookies 1051e60ee7dfb05b:b33f19a972df18bd<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:35 >= :
message 8745f560<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Microsoft Sans Serif","sans-serif"'>10/11/10 20:04:36 !! : tunnel
DPD timeout for peer x.x.x.x:4500<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Any ideas? <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span><![endif]>James<o:p></o:p></p>
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