GlobalProtect users can continue past an invalid portal certificate
At a glance
Base severity
Area
Platform
Evidence level
Benchmark reference
Reads the export, not the device
ConfigProof reads a configuration export. This control is evaluated against the objects in that file, and it reports what the file says. It does not connect to the device and sees no traffic, so a finding here describes the configuration, not what the firewall is doing right now.
Why it matters
A user who accepts the warning signs in to whoever answers with that certificate, so a false portal can collect the credentials.
How to fix it
Web interface
The steps below are written for the web interface. A finding raised on your own export carries the same steps with your object names filled in.
- Set Allow User to Continue with Invalid Portal Server Certificate to No (Network, GlobalProtect, Portals, the portal, Agent, the configuration, App), and install a portal certificate the endpoints trust. Commit.
Command line
PAN-OS CLI, standalone firewall, vsys1
set vsys vsys1 global-protect global-protect-portal <portal> client-config configs <agent-config> gp-app-config config can-continue-if-portal-cert-invalid value noAn example. Values in angle brackets are yours to supply; a finding on your own export fills in the names it read. Nothing here commits. Review the candidate configuration, then commit it yourself.
Read it back
show vsys vsys1 global-protect global-protect-portal <portal> client-config configs <agent-config>Values to fill in2
- <portal>
- The GlobalProtect portal that holds the agent configuration
- <agent-config>
- The agent configuration to change
Before you type it1
- Endpoints that do not trust the portal certificate can no longer connect.
How to confirm the fix
- On an endpoint that receives this configuration, confirm the app refuses a portal whose certificate it does not trust.
Limits
- The check reads the setting, not whether the portal certificate is valid today.
Compliance references
No benchmark recommendation is mapped to this control in this version.
More in Remote access VPN
- PAN-SEC-069GlobalProtect gateway is configured without a client certificate requirement
- PAN-SEC-111GlobalProtect presents a certificate that is expired, expiring or self-signed
- PAN-SEC-112GlobalProtect accepts a TLS version below 1.2
- PAN-SEC-153GlobalProtect agent connects only on demand
- PAN-SEC-168Two agent tunnel profiles draw from the same or overlapping addresses
- PAN-SEC-169An agent tunnel profile matches any user beside other profiles
- PAN-SEC-173Users can disconnect the always-on GlobalProtect app
- PAN-SEC-174Users can uninstall the GlobalProtect app
See it on your own firewall
One complete analysis of one firewall costs nothing and needs no card.