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05-04-2021 10:58 AM - edited 05-04-2021 11:00 AM
Hello all,
I would like to know what is the default port range of source NAT overload on a Cisco router ? <1024–65535> ?
So, this command "ip nat settings interface-overload port range start <1024–65535>" allow me to limit or increase the default range ?
Thank you !
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05-04-2021 11:37 AM
Hello,
I don't think there is a default. The command:
show ip nat portblock dynamic global detail
tells you what is configured. Without you actually defining a range, the command should render no output/result, meaning that by default, no ports are blocked.

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05-04-2021 11:37 AM
Hello,
I don't think there is a default. The command:
show ip nat portblock dynamic global detail
tells you what is configured. Without you actually defining a range, the command should render no output/result, meaning that by default, no ports are blocked.
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05-04-2021 01:11 PM
Thank you Georg !
This command (show ip nat portblock dynamic global detail) show the TCP/UDP port blocks allocated for NAT.
