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<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>Now works very well!!!</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks again<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Hi </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>This should give you an idea:</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><!--StartFragment --> [ #Allow IKE ]<br>
<br>
# Allow ESP Traffic from/to Gateway<br>
iptables -A INPUT -i $EXTERNAL_INTERFACE -p esp -j ACCEPT<br>
iptables -A OUTPUT -o $EXTERNAL_INTERFACE -p esp -j ACCEPT<br>
<br>
# Tag Incoming IPSec Traffic. 'mark' sticks after processing.<br>
iptables -t mangle -A PREROUTING -i $EXTERNAL_INTERFACE -p esp -j MARK
--set-mark 1<br>
<br>
# Forward Authenticated Traffic to LAN.<br>
iptables -A FORWARD -i $EXTERNAL_INTERFACE -m mark --mark 1 -d $LAN_ADDRESSES
-j ACCEPT <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><!--StartFragment --># Allow established
connections to communicate back.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>iptables -A FORWARD -i $LAN_INTERFACE -o $EXTERNAL_INTERFACE -m state
--state NEW,ESTABLISHED,RELATED -j ACCEPT<br>
iptables -A FORWARD -i $EXTERNAL_INTERFACE -o $LAN_INTERFACE -m state --state
ESTABLISHED,RELATED -j ACCEPT<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'># SRC nat everything apart from esp
traffic.</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><!--StartFragment -->iptables -t nat -A POSTROUTING -o
$EXTERNAL_INTERFACE -p ! esp -j SNAT --to-source $EXTERNAL_IPADDR <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>I hope this helps.</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Cheers,</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Daniel.</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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