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FAQ-Can the intranets on both ends of the IPSec tunnel be on the same subnet

Publication Date:  2015-07-01 Views:  293 Downloads:  0
Issue Description
Can the intranets on both ends of the IPSec tunnel be on the same subnet?
Solution
No.

If the two networks are on the same subnet, the local gateway considers a packet destined to the remote network as a packet exchanged within the local network. Therefore, the local gateway does not forward the packet to the remote network through the IPSec tunnel.


If a headquarters establishes IPSec tunnels with multiple branch offices, the headquarters network and the branch networks cannot be on the same subnet, and the branch networks cannot be on the same subnet, either.

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