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FAQ-What Ports Must Be Open for IPSec?

Publication Date:  2019-01-24 Views:  150 Downloads:  0
Issue Description
What ports must be open for IPSec?
Solution
The USG9000 must have the following ports open for corresponding packets:
 Ports 500 and 4500 as the destination ports of UDP packets. If no NAT device is deployed, use port 500. If any NAT device is deployed, use port 4500.
 Port 51 for IP packets using the AH protocol and port 50 for IP packets using the ESP protocol.

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