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Cisco Meraki Documentation

Client VPN Authentication Protocol

The Client VPN uses PAP as the authentication method. PAP authentication is always transmitted inside an IPsec tunnel between the client device and the MX security appliance using strong encryption. User credentials are never transmitted in clear text over the WAN or the LAN. An attacker sniffing on the network will never see user credentials because PAP is the inner-authentication mechanism used inside the encrypted IPsec tunnel. 

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