Firewall Rules for Oracle Cloud at Customer Machine to the Customer
Network
The ports outlined in this table are required for accessing the Oracle Cloud at
Customer system and for the system to access the services required.
Table 3 Firewall Rules between Oracle Cloud at Customer Machine and the Customer
Network
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Customer Shared IP Pool
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Customer DNS
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DNS Forwarding (UDP/53; TCP/53)
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DNS forward is required to forward all lookups to non-
oraclecloudatcustomer.com domains.
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Customer DNS
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Customer Shared IP Pool
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DNS Forwarding (UDP/53; TCP/53)
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DNS forward is required to forward all lookups to
oraclecloudatcustomer.com domains that are Cloud Service
endpoints on Oracle Cloud at Customer Machines.
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Customer Shared IP Pool
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Customer SMTP
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SMTP (TCP/25 (or 587, 465,customer defined in PCMA, the Oracle
Cloud at Customer configuration assistant))
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Cloud notification and registration emails.
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Customer Management Laptop
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Customer Shared IP Pool
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HTTPS (TCP/443)
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Customer management of their Oracle Cloud at Customer Machine
environment.
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