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Omars
Beginner

Source NAT port range settings

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 !

1 ACCEPTED SOLUTION

Accepted Solutions
Georg Pauwen
VIP Expert

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.

View solution in original post

2 REPLIES 2
Georg Pauwen
VIP Expert

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.

View solution in original post

Thank you Georg !

 

This command (show ip nat portblock dynamic global detail) show the TCP/UDP port blocks allocated for NAT.