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Site-to-Site VPN with certificates

Hi everyone,

I have a remote user with an ASA-5505 which needs to establish vpn tunnels to two different ASA-5520's. The remote user has a dynamic IP for his outside address.

I can configure it to work with DefaultL2LGroup for the pre-shared-key, but that creates security conflicts with my remote VPN users which use DefaultL2LGroup.

Is there a way to use digital certificates which I can generate from each ASA-5520, and manualy import the public keys into the ASA-5505.

I do mave multiple ASA-5505's but each only has to establish tunenls to the two different 5520's.

All the docutmention I can find uses a Microsoft CA and I want to set this up (unless it's a security breach) without one.

Is there a way to do this like with SSH where I can copy the public key to the remote end?

Thanks,

Carlos

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Cisco Employee

Carlos,

Yes you can.

ASA supports both SCEP and copy-and-paste enrollment methods.

http://www.aboutcisco.biz/en/US/products/ps6120/products_configuration_example09186a00808a61cd.shtml

http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a0080aa5be1.shtml

Please note that CRL/OCSP has to be publicly available in a scenario like this (or checking disabled).

Marcin

edit: spelling and added links.

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