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I have a site to site VPN configured between two ASA 5520s. I have a TFTP server behind ASA1, with an IP of 172.16.1.1 on the "inside" network. I'd like to be able to copy the running config of ASA2 through the VPN to 172.16.1.1, but am unable to do so. I can hit the TFTP server from a machine on the "inside" network of ASA2. Is there a way that I can tell ASA2 to make the TFTP connection from the "inside" network of ASA2, or is there a better solution to this?

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3 Answers

Assuming you're using the 'copy' command on the ASA to initiate the transfer, it should be possible to specify the interface that you want the tftp client (ASA2) to use the IP of (in this case, originating from the 'inside' interface so that it matches the relevant ACLs.)

Have a look at syntax: http://www.cisco.com/en/US/docs/security/asa/asa70/command/reference/c.html#wp1970383

its likely you'll need to issue command as: ASA2#copy running-config tftp://[user[:password]@]server[:port]/[path/]filename[;int=interface_name]

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I'm guessing my IOS doesn't support setting the interface name as an additional tftp parameter:

copy running-config tftp://[user[:password]@]server[:port]/[path/]filename[;int=interface_name]

but I did get it to work by setting the system default tftp server:

tftp-server inside [server] /[filename]
write tftp
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I think you need to issue this command:

management-access inside

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