May 08, 2020 IKEv2 payload authentication and ESP packet authentication. (Windows 7 or later and macOS 10.7 or later). Ability to use certificates with SHA-2 in TLS-based EAP methods. ECDH support for key exchange. Groups 19, 20, and 21 IKEv2 key exchange and IKEv2 PFS. Ability to use ECDH in TLS-based EAP methods (Windows). I am using macOS 10.12.3 and Cisco Anyconnect VPN client version 4.3.05017. No valid certificates available for authentication'. Anyconnect 4.3.05017 'no. Cisco AnyConnect Secure Mobility Client. AnyConnect Secure Mobility Client v4.x; Give Input on Cisco.com. Help Improve Cisco.com. Fill out this 5-minute screening survey to be eligible to. I am getting 'No valid certificates available for uthentication' message while trying to connect Cisco AnyConnect VPN. I am having a valid certificate in Keychain Access. I couldn't find an option to import the certificate to the VPN. There seem to be much more problems with 3.1.04049 Especially with certificate authentication.
KB ID 0000335 Problem
It’s been a while since I wrote a walk though on the Cisco AnyConnect/SSL VPN solution, and usually I secure these with Active Directory or simply using the local user database on the firewall. But what if you wanted to use certificates instead? Perhaps your users are too “technically challenged” to remember their passwords. Or you want to enable two factor authentication with usernames/passwords AND certificates (something you know and something you have).
Solution
Step 1: Setup the ASA as a Certificate Authority
After version 8 Cisco included a complete CA solution in the firewall with a web front end. to use it we need to a) turn it on, b) give it an email address, c) provide a subject name, and finally d) create a unique pass phrase to generate the root certificate from.
Connect to the firewall and carry out the following,
To do the same via ASDMconnect to the ASDM > Navigate to Configuration > Remote Access VPN > Certificate Management > Local Certificate Authority > CA Server > Fill in the details > Apply.
To check that the CA Server is up and running issue a “show crypto ca server” command.
Step 2: Obtain a Client Certificate
If you have a LOT of these you can set them up and send them by email directly, I’m just going to do this one manually, By default your webvpn probably isn’t enabled on the “inside” so lets turn that on.
To do the same via ASDMconnect to the ASDM > Navigate to Configuration > Remote Access VPN > Network (Client) Access > AnyConnect Connection Profiles > Tick both the inside options > Apply.
Now I’m going to create a user, and a “One Time Password”.
Via ADSM it’s a little more convoluted, you need to add the user then view/re-generate the OTP.
Open a web browser and got to https://{ip or name of firewall}/+CSCOCA+/enroll log in with the details you created above.
When prompted download the certificate and put it on the machine that requires secure access. Simply double click it and import it (it should import into the “Personal Certificates” folder.) – if you are prompted for a password you enter the OTP from above.
Step 3: Change the VPN authentication to Certificate.First lets check that enrolment was successfully with a “show ca server user-db” command.
Change the webvpn authenticate to certificate. Note your SSL tunnel group WILL have different name.
Add Certificate To Cisco AnyconnectTo use usernames AND certificates use “both” instead of “cert”, to Revert back to usernames enter “aaa”
Via ASDM
Step 4: Test
Connect to the VPN portal and you should now be prompted for certificate authentication.
Related Articles, References, Credits, or External Links
Cisco ASA 5500 – Using a Third Party Digital Certificate(For Identification, AnyConnect, and SSL VPN)
KB ID 0001279 ProblemWe had a firewall fail at work this week, as part of the rebuild the latest OS was put on it, version 9.7(1). I thought no more about it until I tried to VPN in and got this; I used my Windows 10 VM and that connected fine, only my MacBook could not connect, this VPN tunnel is a big deal I need it to get onto client’s networks. I tried my other VPN connections and every one was fine, only the recently rebuilt one didn’t work? Ive seen OSX throw a wobbly with AnyConnect in the past so I did a complete uninstall, deleted the opt/cisco folder and put on the latest version (4.4.00243 at time of writing) no change. VPN Connection attempt has failed due to server communication errors. Please retry the connection A look in the client message history showed me this.. Connection attempt has failed. No valid certificates available for authentication. I checked my certificates, and the certificate on the firewall both they, (and the certificate chain,) were fine. Debugging AnyConnect gave NO OUTPUT at all, but debugging SSL showed me this; Try Googling that and getting a result! In fact that’s probably what brought you here. SolutionIf you change a Cisco OS and things like this stop working normally it’s because they’ve dropped support for something that’s got a security hole in it. In the wake of the Poodle Exploit I assumed it was an SSL/TLS problem, but that wasn’t it. I was in the right ball park though, and a bit of lateral thinking and SSL cipher problems I’ve had with ASDM, made me think, what if it’s SHA that’s been dropped because everyone is dropping SHA1 cause it’s the hashing algorithm of Satan? Cisco Anyconnect No Valid Certificates Available For Authentication Mac Os XWell as soon as I added a SHA1 ciphers back in, everything started working again! Cisco Anyconnect No Valid Certificates
Disclaimer: SHA1 is bad, where practical all cert ciphers should be at least SHA256
Related Articles, References, Credits, or External LinksAnyconnect No Valid Certificates AvailableNA Comments are closed.
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November 2020
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