Forum Discussion
What_Lies_Bene1
May 23, 2013Cirrostratus
You'd typically find this design in place: ISP > Firewall > F5
From an IP perspective: ISP:Firewall would be one subnet, Firewall:F5 would be another subnet and you'd then have another subnet for the 'inside' of the F5. They shouldn't be on the same subnet ideally.
Of course, this depends on how your ISP does it's addressing and how you are terminating the ISPs lines/equipment etc.