Secure Access VPN Client Certificate Revocation Services
Required by Cisco Secure Client deployments with the Virtual Private Network (VPN) module.
The Cisco Secure Client Zero VPN module uses HTTPS to communicate with the Secure Access VPN client certificate revocation services. We recommend that you allow all traffic on ports 80 over TCP for the Secure Access VPN domains.
| Domains | Port/Protocol | Description |
|---|---|---|
| *.vpn.sse.cisco.com | 80/TCP | Validate VPN certificates |