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<p class=MsoNormal><span lang=EN-US>Hi,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I’ve got a tunnel working ok started
from one machine on my internal network, and i can access the other side of the
tunnel and the other side can access my lan.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>But now I moved openswan to the machine
that has my internet interface, my home made router </span><span lang=EN-US
style='font-family:Wingdings'>J</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The tunnel on this machine starts ok, but
when I try to access any machine on the other side of the tunnel, it doesn’t
work </span><span lang=EN-US style='font-family:Wingdings'>L</span><span
lang=EN-US> but the other side can still access my lan </span><span lang=EN-US
style='font-family:Wingdings'>L</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I don’t know if its my iptables
rules, but its weird because if I start the tunnel on any other machine of my
lan it works fine </span><span lang=EN-US style='font-family:Wingdings'>L</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I try to ping a machine on the other side
and it doesn’t do anything :<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US># ping 10.112.32.78<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>PING 10.112.32.78 (10.112.32.78) 56(84)
bytes of data.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>…<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Here are my iptables rules:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>eth0 - LAN<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>eth3 – WAN<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>ipsec0 – ipsec tunnel<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US># Firewall configuration written by
system-config-firewall<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US># Manual customization of this file is not
recommended.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>*nat<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>:PREROUTING ACCEPT [0:0]<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>:OUTPUT ACCEPT [0:0]<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>:POSTROUTING ACCEPT [0:0]<o:p></o:p></span></p>
<p class=MsoNormal>-A POSTROUTING -o eth3 -j MASQUERADE<o:p></o:p></p>
<p class=MsoNormal>-A POSTROUTING -o ipsec0 -j MASQUERADE<o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>-A PREROUTING -i eth3 -p tcp -m tcp -m
multiport --dports 25,80,443,465,993,1194,3000 -j DNAT --to-destination
192.168.2.253<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A PREROUTING -i eth3 -p udp -m udp -m
multiport --dports 1194 -j DNAT --to-destination 192.168.2.253<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>COMMIT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>*filter<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>:INPUT ACCEPT [0:0]<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>:FORWARD ACCEPT [0:0]<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>:OUTPUT ACCEPT [0:0]<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -m state --state
ESTABLISHED,RELATED -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -p icmp -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -i lo -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -p ah -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -p esp -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -i eth0 -m state --state NEW -m
tcp -p tcp -m multiport --dports 22,902,3260,5901,9222,9333 -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -i eth0 -m state --state NEW -m
udp -p udp -m multiport --dports 161,162,177 -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -i eth3 -m state --state NEW -m
tcp -p tcp -m multiport --dports 25,465,993,1194,3000 -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -i eth3 -m state --state NEW -m
udp -p udp -m multiport --dports 1194 -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A FORWARD -m state --state
ESTABLISHED,RELATED -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A FORWARD -p ah -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A FORWARD -p esp -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A FORWARD -p icmp -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A FORWARD -i lo -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A FORWARD -o eth3 -j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A FORWARD -i eth3 -m state --state NEW -m
tcp -p tcp -d 192.168.2.253 -m multiport --dports 25,80,443,465,993,1194,3000
-j ACCEPT<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A FORWARD -i eth3 -m state --state NEW -m
udp -p udp -d 192.168.2.253 -m multiport --dports 1194<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A INPUT -j REJECT --reject-with
icmp-host-prohibited<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>-A FORWARD -j REJECT --reject-with
icmp-host-prohibited<o:p></o:p></span></p>
<p class=MsoNormal>COMMIT<o:p></o:p></p>
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