<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Hello everyone</div><div>I am newbie to strongswan. I set up kubuntu using <a href="http://samsclass.info/ipv6/proj/proj-L5-VPN-Server.html" target="_blank" style="color: rgb(17, 85, 204); font-family: arial, sans-serif; font-size: 13px;">http://samsclass.info/ipv6/<wbr>proj/proj-L5-VPN-Server.html</a></div><div><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;">and get the following error when trying connect to strongswan VPN through iOS. With windows it works through. I searched in the strongswan mailing list and elsewhere but coulf not find anything to rectify this. Here is the difference that I found in the logs</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new
roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><span style="background-color: transparent;">With iOS it says</span><br></div><div class="MsoNormal" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><ol class=""><li><span style="font-size: 12pt;">"L2TP-PSK-NAT"[2] 192.168.10.6 #53: the peer proposed:
192.168.10.8/32:17/1701 -> 192.168.10.6/32:17/58706</span><br></li><li><span style="font-size: 12pt;"> "L2TP-PSK-NAT"[36] 192.168.10.6 #54:
ENCAPSULATION_MODE_UDP_TRANSPORT_RFC must only be used if NAT-Traversal is detected</span><br></li><li><span style="font-size: 12pt;"> "L2TP-PSK-NAT"[36] 192.168.10.6 #54: sending encrypted notification
BAD_PROPOSAL_SYNTAX to 192.168.10.6:4500</span><br></li><li><span style="font-size: 12pt;">"L2TP-PSK-NAT"[36] 192.168.10.6: deleting connection
"L2TP-PSK-NAT" instance with peer 192.168.10.6 {isakmp=#0/ipsec=#0}</span><br></li></ol><div>With windows, it says</div></div><div class="MsoNormal" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><ol><li><span style="font-size: 12pt;">"L2TP-PSK-NAT"[35] 192.168.10.20 #51: the peer proposed:
192.168.10.8/32:17/1701 -> 192.168.10.20/32:17/0</span><br></li><li><span style="font-size: 12pt;">"L2TP-PSK-NAT"[35] 192.168.10.20 #52: responding to Quick Mode
proposal {msgid:34008be2}</span><br></li></ol><div>Any inputs appreciated</div></div><div style="background-color: transparent;">
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