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Hey Andy,<br>
<br>
maybe this helps a bit. I tried something similar, I tried to
establish a "group"-system based on my certificates. So here my
server-config:<br>
<br>
conn group1<br>
left=192.168.0.200<br>
leftcert=vpnserver.crt<br>
leftsubnet=192.168.5.0/24<br>
leftid=vpnserver.of.our.company.fqdn<br>
leftfirewall=yes<br>
right=%any<br>
rightid="DC=de, DC=company, O=Companyname, OU=group1
certificate, CN=*"<br>
rightsourceip=10.0.50.0/24<br>
auto=add<br>
<br>
conn group2<br>
left=192.168.0.200<br>
leftcert=vpnserver.crt<br>
leftsubnet=192.168.5.0/24,192.168.3.0/24<br>
leftid=vpnserver.of.our.company.fqdn<br>
leftfirewall=yes<br>
right=%any<br>
rightid="DC=de, DC=company, O=Companyname, OU=group2
certificate, CN=*"<br>
rightsourceip=10.0.0.0/24<br>
auto=add<br>
<br>
So now generating different certificates with right ids should bring
you in the correct subnet.<br>
Further, by chosing a rightsourceip you can configure your firewall
to accept connections to some hosts depending on <br>
senders address. In config I have different rightsourceips
defined...<br>
<br>
Your firewallsettings can be edited or configured. The defaut script
for that is tha updown-script of strongswan. On debian<br>
wheezy I could find it in /usr/libexec/ipsec/_updown<br>
<br>
Hope this helps. <br>
Kind regards<br>
Uli<br>
<br>
<br>
Am 05.06.2013 10:36, schrieb Paton, Andy:
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<div class="WordSection1">
<p class="MsoNormal"
style="margin-bottom:12.0pt;line-height:13.5pt;background:white;vertical-align:baseline"><span
style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">I
am trying to design a unified VPN gateway - by unified i
mean one VPN headend, which can handle connections to
multiple backends. I have a VM with a number of NiC's
attached:<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-bottom:12.0pt;line-height:13.5pt;background:white;vertical-align:baseline"><span
style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">eth0
- Front Facing IP of Headend 10.1.0.2/30 eth1 - Backend
Resource grouup A 172.18.81.137/24 eth2 - Backend Resource
group B 162.18.81.137/24<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-bottom:12.0pt;line-height:13.5pt;background:white;vertical-align:baseline"><span
style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">So
the intention is to configure the VPN connection to inspect
a device/user certificate (x509) and route to the backend
resource according to an ACL.<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-bottom:12.0pt;line-height:13.5pt;background:white;vertical-align:baseline"><span
style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">So
for example -<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-bottom:12.0pt;line-height:13.5pt;background:white;vertical-align:baseline"><span
style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">Joe
Bloggs is permitted to access resources on both backend A
& B. Mickey Mouse is permitted to access only resources
on backend B.<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-bottom:12.0pt;line-height:13.5pt;background:white;vertical-align:baseline"><span
style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">Joe
Bloggs establishes VPN connection to the headend, and
attempts to connect to a resource: 172.17.81.142 for
example, on resource group A. Based on the Joe's certificate
he should be routed accordingly for this request.<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-bottom:12.0pt;line-height:13.5pt;background:white;vertical-align:baseline"><span
style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">If
Mickey mouse attempts to access the same resource, because
the certificate doesn't permit access - then Strongswan
should block access to this IP address.<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-bottom:12.0pt;line-height:13.5pt;background:white;vertical-align:baseline"><span
style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">How
might i go about configuring strongswan to do this?<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-bottom:12.0pt;line-height:13.5pt;background:white;vertical-align:baseline"><span
style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">Current
config looks like this - for dropping resources onto a
single subnet:<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">#
/etc/ipsec.conf - strongSwan IPsec configuration file<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE"><o:p> </o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">config
setup<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
crlcheckinterval=180<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
strictcrlpolicy=no<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
plutostart=no<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE"><o:p> </o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">conn
%default<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
ikelifetime=60m<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
keylife=20m<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
rekeymargin=3m<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
keyingtries=1<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
ike=aes256-sha256-modp1024!<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
esp=aes256-sha256-modp1024!<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE"><o:p> </o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">conn rw<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
#left=10.1.0.2<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
leftcert=supermanCert.der<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
leftid="CN=EN, O=JusticeLeague, CN=Metropolis"<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
leftsubnet=172.17.81.137/27<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
leftfirewall=yes<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
right=%any<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
rightsourceip=10.3.100.0/24<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
rightid=%any<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
keyexchange=ikev2<o:p></o:p></span></p>
<p class="MsoNormal"
style="line-height:13.5pt;background:#EEEEEE;vertical-align:baseline">
<span
style="font-size:10.5pt;font-family:Consolas;color:black;border:none
windowtext 1.0pt;padding:0cm;background:#EEEEEE">
auto=add</span><span
style="font-size:10.5pt;font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"HP Simplified
Light","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"HP Simplified
Light","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size:9.0pt;font-family:"HP
Simplified","sans-serif";color:black">Andy
Paton<br>
</span></b><span style="font-size:9.0pt;font-family:"HP
Simplified","sans-serif";color:#717172">Business
Development Solution Architect<br>
HP Enterprise Services</span><span style="color:#0F243E"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
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<pre wrap="">_______________________________________________
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<br>
<pre class="moz-signature" cols="72">--
Ulrich Schinz
<a class="moz-txt-link-abbreviated" href="mailto:ulrich.schinz@ksfh.de">ulrich.schinz@ksfh.de</a>
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