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New Member

ASA 5505 static nat error message

i would like to port forward an port 4500 on the outside interface to inside host but it shows the error message below.

But if i add for port ftp and tftp without any problem.

[ERROR] nat (inside,outside) 6 source static aruba interface service Aruba-4500 Aruba-4500

NAT unable to reserve ports.

3 REPLIES
Hall of Fame Super Silver

Re: ASA 5505 static nat error message

Do you have remote access or site-site VPN also setup and enabled on the outside interface?

If so, port 4500 is used by IPsec so I suspect it is reserved in the appliance.

New Member

Re: ASA 5505 static nat error message

yes, we have site to site vpn config on the asa!!

may be this is the reason we can't enable this port on outside interface!!

Hall of Fame Super Silver

Re: ASA 5505 static nat error message

Yes. Enabling IPsec on the outside interface "siliently" reserved that port.

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