Integrations/VPN & Firewall/watchguard-mobile-vpn
Mobile VPN · Firebox · RADIUS

MFA for WatchGuard

WatchGuard Mobile VPN (SSL, IKEv2, and IPSec) on the Firebox authenticates users against RADIUS, but the appliance itself offers no second factor. A leaked or reused password is enough to bring up a tunnel. Authnull sits in front of the Firebox RADIUS exchange and enforces MFA on Mobile VPN logins and device administration. You add Authnull as a RADIUS server, enable it for Mobile VPN authentication, and a factor is required before the connection completes.

At a glance
VendorWatchGuard
Connects viaRADIUS
ProtectsMobile VPN & Firebox admin
DeploymentAgentless
Setup time15 minutes
No rip-and-replace — sits in front of your existing setup
How Authnull connects

WatchGuard forwards the login; Authnull adds the factor.

WatchGuard
user connects
Authnull
RADIUS
Directory
AD / LDAP
User device
approve factor

The Firebox forwards the login to Authnull over RADIUS; Authnull validates against your directory, challenges for the factor, and returns Access-Accept. Use a longer RADIUS timeout to accommodate push approval.

Setup

Configure MFA for WatchGuard

Real steps — the exact menus, fields, and values. Follow along in your console; the whole thing takes about 15 minutes.

1

Add the RADIUS server

In Policy Manager or Fireware Web UI, add Authnull as a RADIUS server with its IP, port, and shared secret.

Authentication → Servers → RADIUS → Add
2

Enable RADIUS for Mobile VPN

Set the Mobile VPN authentication server to RADIUS so remote logins are validated through Authnull.

VPN → Mobile VPN → Authentication
3

Map groups to VPN policy

Configure the RADIUS group names allowed Mobile VPN access so the right users are challenged.

Authentication → Authorized Users/Groups
4

Save and test

Save the configuration and connect with the WatchGuard VPN client using a test account; approve the factor to complete the tunnel.

Reference — connection values
ProtocolRADIUS
auth port1812
Timeout60s
Group attributeFilter-Id

Closes the MFA gap auditors look for

Enforcing MFA on WatchGuard gives you evidence for the remote-access and privileged-access controls in SOC 2 and the access requirements under CCPA — with per-login logs you can hand straight to an assessor.

Add MFA to WatchGuard — free to start.

Spin up Authnull, point WatchGuard at it, and enforce a factor on a pilot group today. No card, no rip-and-replace.

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