How to pick external facing IPs for a Pen Test

This is my first time having given responsibility to take ownership of the annual Pen Test, there has been absolutely no context or any training or a record on what needs to be provided to the vendor to do this.

Here is what I have so far:

1. A vendor ready to do the network Pen test and the management happy with the quote
2. A list of external IPs, I got this from our NAC tool
3. I know …

context cybersecurity external facing ips ownership pen pen test record responsibility test training vendor