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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’m attempting to use openswan on a pair of Debian
Sarge kernel version 2.6.8-2-386 boxes. These machines are SNAT gateways
to the internet, and I would like to have the private addresses behind these
boxes (192.168.25.0/24 & 192.168.26.0/24) shared through a VPN. I
have installed openswan 2.3.1 from the openswan.org site, and I have tried with
and without the ipsec module from that package installed. I have an
active ipsec0 interface. I have put a “iptables –t nat –I
prerouting –d VPN –j return” and “iptables –t nat
–I postrouting –d VPN –j return” on both sides to keep
from Natting VPN packets. I have the VPN established to STATE_MAIN_I4
(ISAKMP SA established) on both sides. When I ping from either side I see
ESP packets go out, but none come back. I can see the ESP packets on the receiving
end’s external interface as well.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have been working on this for two days straight and can’t
find an answer anywhere. Will the VPN not work with SNAT enabled, even if
I’m not SNATing the packets between the shared networks?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>What am I missing?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thank you for any assistance.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>--JATF<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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