Cisco FTD Deploy AnyConnect (from FDM)

KB ID 0001682

Problem

In this article I will focus on ‘Remote Access’ VPN, which for Cisco FTD means using the AnyConnect client. Ive spent years deploying this solution for ASA so it’s a product I know well. As with all things Cisco, there are a couple of things that could trip you up. Let’s get them out of the way first.

If you are used to AnyConnect then you probably have the client software. It’s the same software package that’s installed with Cisco ASA. Sometimes just getting access to the download is a trial! Anyway you will need the AnyConnect ‘Package’ files, these typically have a .pkg extension, (Cisco refer to these as Head-End packages). Theres one for macOS, one for Windows, (well another one now for ARM processors, but I’ve not needed it yet), and one for Linux. You will need to download a package for each platform your users will need to connect with.

AnyConnect Software Download

AnyConnect Licence! After years of getting a few free with a Cisco ASA, I was unhappy to find that’s not the case with Cisco FTD. If you want to use AnyConnect you need to have a licence, and it needs to be in your Smart Licensing Account, (before you enable Remote Access VPN). 

Final Gotcha! Make sure you HAVE NOT enabled HTTPS management on the outside interface of the FTD before you start configuring AnyConnect, or you will get all the way to the end, and it will fall over and you will have to start again (thanks Cisco! How hard would it be to say, if you enable this, I will disable https outside management is this OK?) 

Solution

If you haven’t already done so enable the Remote Access VPN licence > Smart Licence > Fire Configuration > RA VPN  License > Enable > Change to licence type (mines Apex). Have a coffee and recheck everything is licensed OK.

AnyConnect 4 – Plus and Apex Licensing Explained

FTD Enable RA-VPN License

Remote Access VPN > Configure > Create Connection Profile.

FTD Enable AnyConnect

Give the profile a name, a group alias, and group URL > I’m using the FTD as my AAA Identity source (so my username and passwords are held on the firewall) that’s fine for small deployments, but in production you should think about deploying an AAA solution (called a Special Identities Realm in FTD). Scroll down.

FTD AnyConnect AAA and Profile

I typically create a new network object for my remote clients to use, you can select your internal DHCP server to send out addresses if you wish > Next.

FTD AnyConnect DHCP Pool

I’m using Cisco Umbrella DNS servers, (or the DNS servers formally known as OpenDNS) > I’m setting a ‘welcome banner’ but you dont need to, (some people find them annoying!) > Scroll down.

FTD AnyConnect Welcome Banner and DNS

Split tunnelling: As always Cisco assume you want to tunnel everything, in most cases that’s NOT the requirement (BUT it IS the most secure!) I setup split tunnelling by Excluding my internal networks > Next.

Client Profiles: If you have one you can set it here, if you want to create one, see the following article;

Cisco FTD (and ASA) Creating AnyConnect Profiles

FTD AnyConnect Split Tunnelling

Select the certificate the FTD will present (don’t choose the web one it will error!) > Select the interface your client will connect to (typically outside) > Enter the FQDN of the device > I allow bypass for VPN traffic, if you want to scan remote traffic with firepower etc DON’T select this > Enable NAT Exemption (select the internal interface) > Internal Networks: Then add in the internal network, I’ve already got an object for that, (you may need to create one.) > Scroll down.

FTD AnyConnect Global Settings

Here you upload your .pkg files (I mentioned above) when you have finished > Next.

FTD Upload AnyConnect Packages

Review the settings > Finish.

FTD AnyConnect Settings

Cisco FTD Create User (via FDM)

You will need a username and password to authenticate (skip this as you are not using the FTD’s internal user database.) Objects > Users > Add > Supply a username and password > OK

FTD Create VPN User

Pending Changes > Deploy Now.

FTD Save and Deploy

Go and have a coffee again, keep clicking pending changes until it looks like this. (Quite why it takes so long, I have no idea?) It’s even more fun, if you made a mistake, because it will just error and fall over, so you have to find the error (if you can) > then remove the pending change and start all over again. Cheers Cisco!

FTD Check Deployment

Finally go to an external client and give it a try, if your clients don’t have the client software installed simply ‘browse’ to the FTD to get it.

FTD Test AnyConnect

Related Articles, References, Credits, or External Links

Cisco Firepower 1010 Configuration

Author: PeteLong

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