[Swan] IPSec Overlapping IP solutions
john.weir at pharos-ei.com
Thu Dec 29 21:04:20 UTC 2016
How does one go about handling an overlapping IP?
I understand this question is broader than LibreSwan, but perhaps there is a solution particular to LibreSwan or ipsec. My own research has left me more confused than enlighten. I am very new to networking and a slow learner.
The situation is:
Left side is on network 10.0.0.0/16 hosted on AWS
Right side is 10.0.0.0/8 hosted by a third party
Both sides are run by different organizations and are not able to change their internal networks.
The configuration is
leftid=hidden # conf for AWS
left=10.0.127.5 # Elastic IP
What perhaps makes this a simpler problem, is the connection is essentially client based: the left will be connecting to the right, but the right has no access to the left. And perhaps even simpler only a single IP on the right is required.
Any advice, or pointers to documentation will be very much appreciated.
Thank you very much - John
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