Hi All - hope somebody can help. I have a Draytek 2830n PLUS dual band with Firmware 3.6.8.4 db

Our external PCI penetration test fails citing :-

Predictable TCP Initial Sequence Numbers Vulnerability.

We have no port forwarding, SSL VPN all turned of, no management from internet, no web server running behind it etc

Is this a vulnerability not addressed in the 2830n PLUS product ? Ive researched and found reference to a fix in other router models . . .
any help much appreciated

Thanks
G

Please contact support so that they can help you with this.