Hi Guys, Please kindly advice.
Thanks, Sumny 在 2012-11-21 下午9:10，"Sunny Soung" <[email protected]>写道： > Hi friends, > > I have 2 VPCs in different amazon AZs. That's like 2 offices in different > cities. For data transfer reasons, I want to setup an IPSec VPN tunnel > between them. > > So I created 2 clean Ubuntu instances and installed StrongSwan with > apt-get. I changed the 3 configuration files - ipsec.conf, ipsec.secret and > strongswan.conf according to the example here > http://www.strongswan.org/uml/testresults4/ikev2/net2net-psk/. > > When I ran 'sudo ipsec up net-net' on one of the Ubuntu server, I saw the > output below: > > ********************************************************************** > ubuntu@City1:~$ sudo ipsec up net-net > > initiating IKE_SA net-net[1] to y.y.y.y > generating IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) ] > sending packet: from x.x.x.x[500] to y.y.y.y[500] > retransmit 1 of request with message ID 0 > sending packet: from x.x.x.x[500] to y.y.y.y[500] > retransmit 2 of request with message ID 0 > sending packet: from x.x.x.x[500] to y.y.y.y[500] > retransmit 3 of request with message ID 0 > sending packet: from x.x.x.x[500] to y.y.y.y[500] > retransmit 4 of request with message ID 0 > sending packet: from x.x.x.x[500] to y.y.y.y[500] > retransmit 5 of request with message ID 0 > sending packet: from x.x.x.x[500] to y.y.y.y[500] > giving up after 5 retransmits > establishing IKE_SA failed, peer not responding > ********************************************************************** > > I'm sure that the firewall has been opened for the connection. I also ran > tcpdump to monitor the traffic. But I saw nothing on each side. > > Any ideas? > > > Best wishes, > Sunny >
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