On 16 Nov 2016, at 05:27, Mathew Marulla <[email protected]> wrote:
> Although I have read just about every tutorial and similar posting I can find
> about running StrongSwan on an EC2 instance, I still can not seem to get it
> to work.
I’m doing the same thing, but I started “from scratch” (didn’t have any existing
setup so this is the first setup).
My ipsec.conf:
—— s n i p ——
config setup
uniqueids=no
strictcrlpolicy=no
# NOTE: The 'leftid' must be present as a "Subject Alternative Name" in the
cert!!
conn %default
left=%ETH0%
leftid=vpn.domain.tld
leftcert=hostname.pem
leftsubnet=<VPC_CIDR>
leftfirewall=yes
leftsendcert=always
leftdns=%DNS%
rightdns=%DNS%
keyexchange=ikev2
dpdaction=clear
dpddelay=2400s
fragmentation=yes
forceencaps=yes
compress=yes
ca domain
cacert=domain.tld.pem
auto=add
conn client
leftsourceip=%ETH0%
right=%any
rightid=%any
rightsourceip=<VPN_CIDR>
rightauth=eap-mschapv2
eap_identity=%identity
type=tunnel
auto=add
—— s n i p ——
%ETH0% and %DNS% is changed by a script at boot (by first finding the IP of
‘eth0’ and the ’nameserver’ entry in resolv.conf) because EC2 instances use
DHCP.
So I’m not coding any ‘external’ IP (EIP), just the ‘internal’ (DHCP/private)
one..
I’m not, currently, using any (ELB) load balancers in front of StrongSWAN, but
I might do that in the future. Maybe.
I can authenticate and setup the route etc - I can access the ‘internal’ IP via
the
VPN just fine.
I have yet to get access to the other VPCs over the VPN. I can access them
if I first ssh into the VPN server and then ssh to a host in another VPC.
This is done with VPC peering, but I had _assumed_ that that would work
for VPN as well. But it’s not..
I can’t access any other instance in the VPN VPC though.
I’m pretty sure that have something to do with the routing table(s), but I
haven’t
had time to look into this. I’m pretty sure the StrongSWAN setup is working
correctly though, I’m using the exact same setup at home and there everything
work just fine.
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