DSL network - PPoE Question

Archived from groups: comp.os.linux.networking,comp.os.ms-windows.networking,comp.security.firewalls,comp.sys.ibm.pc.hardware.networking (More info?)

My expertise in the PPOE area is lacking.

I have a network (DSL) that is managed (NAT, etc) by a SonicWall TZ170
firewall. As a part of my business, I am often required to run security
scans using Nmap, Nessus, etc against client networks. When I had my
non-stateful Linksys router in place I could scan at whatever speeds my
client networks required. However, the stateful firewall Sonicwall device
has a limit of 6,000 connections and it's killing my ability to effectively
scan - even at the Nmap "paranoid" rate (which doesn't limit total
connections - just simultaneous connections to a single host or target).

My question is:

If I obtain a second static IP from my provider, can I place a hub outside
of my firewall (direct to the DSL modem) and have both the firewall and a
separate PC connected to that hub - each utilizing one of the static IP's?
That way I can run my scans and not be limited by the firewall's connection
limitation, but still keep my main network protected. I'm trying to figure
out if PPoE can run on 2 separate client machines each pulling in a
different IP. My gut tellms me it's not possible.

If so, can an ISP that utilizes PPoE also somehow support a true static IP
address? I can't talk to them until tomorrow and am anxious to get other
insight first..

Thanks..