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<p>My set up is at home and I'm at work now. Which Draytek do you have had how have you set up the VPN profile (the top section, dial-in section and the LAN section at the bottom; also the advanced settings (but they may be dial-out only, I can't remember).</p>
<p>Nick</p>
<p>On 2014-02-12 02:00, David Fowler wrote:</p>
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<div class="moz-cite-prefix">Hi Nick<br /><br /> Thanks for your reply.<br /><br /> Have made the required changes, and still no go.  Unfortunately I need to have the Centos server establishing the connection.  A lot of the settings in the conf came from reading umpteen docs / configs on the net - this isn't my usual area of specialty, I've just been given the task :)<br /><br /> New <strong>ipsec.conf</strong><br /> config setup<br />      klipsdebug=all<br />      plutodebug=all<br />      protostack=netkey<br />      interfaces=%defaultroute<br /><br /> conn testconnection<br />      type=tunnel<br />      left=1.1.1.1<br />      leftsourceip=192.168.3.195<br />      leftsubnet=192.168.3.0/24<br />      right=3.3.3.3<br />      rightsubnet=192.168.3.0/24<br />      auth=esp<br />      keyexchange=ike<br />      auto=add<br />      pfs=yes<br />      rekey=no<br />      authby=secret<br /><br /> Doing a tcpdump when doing the ipsec auto --add testconnection I can see the server sending the request (thishost and endhost replacing the actual hostnames)<br /><br /> tcpdump -vv -x -X -s 1500 -i eth0 'port 500'<br /> tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 1500 bytes<br /> 01:55:31.099277 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 520)<br />     thishost.isakmp > endhost.isakmp: [bad udp cksum afb2!] isakmp 1.0 msgid 00000000 cookie 0a1a31b314914bbb->0000000000000000: phase 1 I ident:<br />     (sa: doi=ipsec situation=identity<br />         (p: #0 protoid=isakmp transform=12<br />             (t: #0 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=aes)(type=hash value=sha1)(type=auth value=preshared)(type=group desc value=modp2048)(type=keylen value=0080))<br />             (t: #1 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=aes)(type=hash value=md5)(type=auth value=preshared)(type=group desc value=modp2048)(type=keylen value=0080))<br />             (t: #2 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=3des)(type=hash value=sha1)(type=auth value=preshared)(type=group desc value=modp2048))<br />             (t: #3 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=3des)(type=hash value=md5)(type=auth value=preshared)(type=group desc value=modp2048))<br />             (t: #4 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=aes)(type=hash value=sha1)(type=auth value=preshared)(type=group desc value=modp1536)(type=keylen value=0080))<br />             (t: #5 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=aes)(type=hash value=md5)(type=auth value=preshared)(type=group desc value=modp1536)(type=keylen value=0080))<br />             (t: #6 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=3des)(type=hash value=sha1)(type=auth value=preshared)(type=group desc value=modp1536))<br />             (t: #7 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=3des)(type=hash value=md5)(type=auth value=preshared)(type=group desc value=modp1536))<br />             (t: #8 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=aes)(type=hash value=sha1)(type=auth value=preshared)(type=group desc value=modp1024)(type=keylen value=0080))<br />             (t: #9 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=aes)(type=hash value=md5)(type=auth value=preshared)(type=group desc value=modp1024)(type=keylen value=0080))<br />             (t: #10 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=3des)(type=hash value=sha1)(type=auth value=preshared)(type=group desc value=modp1024))<br />             (t: #11 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=3des)(type=hash value=md5)(type=auth value=preshared)(type=group desc value=modp1024))))<br />     (vid: len=12)<br />     (vid: len=16)<br /><br /> This is more of a 'test' as part of a bigger project, but wanted to try and get everything ready first.  I'm not sure of the end requirements for the actual 'live' system - so may wait for those and see how I go.<br /><br /> Dave<br /><br /><br /><br /> On 11/02/2014 4:42 PM, Nick Howitt wrote:</div>
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<p>What settings do you have in the Draytek (including the advanced settings)?</p>
<p>Can you check your subnets (although it is not the issue) as your virtual_private subnets do not match te rightsubnet (/16 is not 255.255.255.0). Anyway you should not need virtual_private or nat_traversal.</p>
<p>In your conn, you will probably also want a leftsubet and leftsoureceip. Also to get the tunnel up and running I'd remove the esp line, change auto to add and have the Draytek initiate the connection.</p>
<p>Have you opened the CentOS firewall to udp:500 and the esp protocol? Is there any reason you are not using PFS?</p>
<p>Regards,</p>
<p>Nick</p>
<p>BTW I have a DrayTek 2710 and 2820 calling me (ClearOS).</p>
<p>On 2014-02-11 05:29, David Fowler wrote:</p>
<blockquote style="padding-left: 5px; border-left: #1010ff  2px  solid; margin-left: 5px;"><!-- node type 8 --><!-- node type 8 --><!-- node type 8 -->Hi all<br /><br /> I'm having some issues getting Openswan running on a Centos6.5 box to connect to a Draytek router (or even another Centos box) using an IPSec connection<br /><br /> Here are all my settings (IP addresses have been changed - but consistent here)<br /> 1.1.1.1 - CentOS server<br /> 2.2.2.2 - CentOS server bcast<br /> 3.3.3.3 - router on the other end<br /><br /> When I run an 'ipsec --up testconenction', I get the following<br /><br /> ipsec auto --up testconnection<br /> 104 "testconnection" #3: STATE_MAIN_I1: initiate<br /> 010 "testconnection" #3: STATE_MAIN_I1: retransmission; will wait 20s for response<br /> 010 "testconnection" #3: STATE_MAIN_I1: retransmission; will wait 40s for response<br /><br /> The /var/log/secure file shows<br /> Feb 11 05:26:29 host pluto[31976]: | processing connection testconnection<br /> Feb 11 05:26:29 host pluto[31976]: | handling event EVENT_RETRANSMIT for 3.3.3.3 "testconnection" #3<br /> Feb 11 05:26:29 host pluto[31976]: | sending 592 bytes for EVENT_RETRANSMIT through eth0:500 to 3.3.3.3:500 (using #3)<br /><br /> Config files and outputs are below<br /><br /> ----------<br /><strong>ifconfig</strong><br /> eth0      Link encap:Ethernet  HWaddr 00:16:3E:38:7B:2C<br />           inet addr:1.1.1.1  Bcast:2.2.2.2  Mask:255.255.248.0<br /><br /> -----------<br /><strong>/etc/ipsec.conf</strong><br /> config setup<br />      klipsdebug=all<br />      plutodebug=all<br />      protostack=netkey<br />      nat_traversal=yes<br />      virtual_private=%v4:192.168.0.0/16,%v4:192.168.3.0/16<br />      interfaces=%defaultroute<br /><br /> conn testconnection<br />      type=tunnel<br />      left=1.1.1.1<br />      right=3.3.3.3<br />      rightsubnet=192.168.3.0/255.255.255.0<br />      auth=esp<br />      esp=3des-168<br />      keyexchange=ike<br />      auto=start<br />      pfs=no<br />      rekey=no<br />      authby=secret<br /><br /> ----------<br /><strong>/etc/ip.secrets</strong><br /> 1.1.1.1 3.3.3.3: PSK "mykeyhere"<br /><br /> ----------<br /><strong>ipsec verify</strong><br /> Checking your system to see if IPsec got installed and started correctly:<br /> Version check and ipsec on-path                                 [OK]<br /> Linux Openswan U2.6.32/K2.6.32-431.3.1.el6.x86_64 (netkey)<br /> Checking for IPsec support in kernel                            [OK]<br />  SAref kernel support                                           [N/A]<br />  NETKEY:  Testing for disabled ICMP send_redirects              [OK]<br /> NETKEY detected, testing for disabled ICMP accept_redirects     [OK]<br /> Checking that pluto is running                                  [OK]<br />  Pluto listening for IKE on udp 500                             [OK]<br />  Pluto listening for NAT-T on udp 4500                          [OK]<br /> Checking for 'ip' command                                       [OK]<br /> Checking /bin/sh is not /bin/dash                               [OK]<br /> Checking for 'iptables' command                                 [OK]<br /><br /> ----------<br /><br /> Any help would be appreciated.<br /><br /> Dave<br /><br /><br /><br /><br /><!-- node type 8 --><br />
<pre>_______________________________________________
<a href="mailto:Users@lists.openswan.org">Users@lists.openswan.org</a>
<a href="https://lists.openswan.org/mailman/listinfo/users">https://lists.openswan.org/mailman/listinfo/users</a>
Micropayments: <a href="https://flattr.com/thing/38387/IPsec-for-Linux-made-easy">https://flattr.com/thing/38387/IPsec-for-Linux-made-easy</a>
Building and Integrating Virtual Private Networks with Openswan:
<a href="http://www.amazon.com/gp/product/1904811256/104-3099591-2946327?n=283155">http://www.amazon.com/gp/product/1904811256/104-3099591-2946327?n=283155</a>
</pre>
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<pre>_______________________________________________
<a class="moz-txt-link-abbreviated" href="mailto:Users@lists.openswan.org">Users@lists.openswan.org</a>
<a class="moz-txt-link-freetext" href="https://lists.openswan.org/mailman/listinfo/users">https://lists.openswan.org/mailman/listinfo/users</a>
Micropayments: <a class="moz-txt-link-freetext" href="https://flattr.com/thing/38387/IPsec-for-Linux-made-easy">https://flattr.com/thing/38387/IPsec-for-Linux-made-easy</a>
Building and Integrating Virtual Private Networks with Openswan:
<a class="moz-txt-link-freetext" href="http://www.amazon.com/gp/product/1904811256/104-3099591-2946327?n=283155">http://www.amazon.com/gp/product/1904811256/104-3099591-2946327?n=283155</a>
</pre>
<br /><fieldset class="mimeAttachmentHeader"></fieldset><br />
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<br /><br />
<pre class="moz-signature">-- 

David Fowler

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