Cisco 2 factor authentication
Has anyone setup two factor VPN using a Cisco ASA VPN solution? What sort of soft client based dual factor authentication options were used for the Cisco VPNs (e.g. Symantec VIP, Google authenticator, Azure authenticator, RSA, etc.) I am trying to find what infrastructure is needed to come up with the solution. Please contact me of list Regards Ray Ludendorff
Any radius based auth works well I've used a solution by secure envoy I the past which seems to work well they also have soft token apps, hard tokens plus SMS based. Sent from my iPhone
On 23 Jun 2016, at 01:51, Ray Ludendorff <LudendorffR@rferl.org> wrote:
Has anyone setup two factor VPN using a Cisco ASA VPN solution? What sort of soft client based dual factor authentication options were used for the Cisco VPNs (e.g. Symantec VIP, Google authenticator, Azure authenticator, RSA, etc.) I am trying to find what infrastructure is needed to come up with the solution.
Please contact me of list
Regards Ray Ludendorff
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On Wed, Jun 22, 2016 at 9:38 PM, Chris Lawrence <clawrence@dovefire.co.uk> wrote:
Any radius based auth works well I've used a solution by secure envoy I the past which seems to work well they also have soft token apps, hard tokens plus SMS based.
However, a cautionary note there is that RADIUS protocol itself uses only weak cryptography and is not secure on the wire. That is, in the absence of AES Keywrap proprietary extension Or when the method of credential used is not authentication using a Client-side Certificate (PKI) as in *EAP. Specifically: if RADIUS is used for the Authentication stage of AAA with a code sent by SMS or OATH token [User types Normal password + One Time Password], then when traffic between RADIUS server and VPN device is captured: The user credentials may be exposed with the extremely weak crypto protection RADIUS or NTLM provides for the user password. If a user re-uses their same password somewhere else on a device not requiring 2FA, then capturing RADIUS traffic could be an effective privilege escalation By copying victim's password from a sniffed RADIUS exchange. -- -JH
As per other statements of such seen elsewhere online, do you have examples or code which will allow the recovery of passwords in a radius exchange? Yes, the shared secret mechanism is widely stated as 'weak' but actively attacked? alan
The radius protocol traffic can be encrypted with ipsec policies...if confidentiality of the radius traffic is a concern ( particularly if traversing untrusted networks) On 26 Jun 2016 3:48 a.m., "Jimmy Hess" <mysidia@gmail.com> wrote:
Any radius based auth works well I've used a solution by secure envoy I
On Wed, Jun 22, 2016 at 9:38 PM, Chris Lawrence <clawrence@dovefire.co.uk> wrote: the past which seems to work well they also have soft token apps, hard tokens plus SMS based.
However, a cautionary note there is that RADIUS protocol itself uses only weak cryptography and is not secure on the wire.
That is, in the absence of AES Keywrap proprietary extension Or when the method of credential used is not authentication using a Client-side Certificate (PKI) as in *EAP.
Specifically: if RADIUS is used for the Authentication stage of AAA with a code sent by SMS or OATH token [User types Normal password + One Time Password], then when traffic between RADIUS server and VPN device is captured: The user credentials may be exposed with the extremely weak crypto protection RADIUS or NTLM provides for the user password.
If a user re-uses their same password somewhere else on a device not requiring 2FA, then capturing RADIUS traffic could be an effective privilege escalation By copying victim's password from a sniffed RADIUS exchange.
-- -JH
We use Phonefactor (now azure authenticator) with anyconnect vpn. It sits in front of LDAP/AD and integrates with it. It an be a PITA but it works. On Wed, Jun 22, 2016 at 3:27 AM, Ray Ludendorff <LudendorffR@rferl.org> wrote:
Has anyone setup two factor VPN using a Cisco ASA VPN solution? What sort of soft client based dual factor authentication options were used for the Cisco VPNs (e.g. Symantec VIP, Google authenticator, Azure authenticator, RSA, etc.) I am trying to find what infrastructure is needed to come up with the solution.
Please contact me of list
Regards Ray Ludendorff
participants (6)
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Alan Buxey -
Chris Lawrence -
Jimmy Hess -
Ray Ludendorff -
Ryan Gelobter -
Tom Smyth