If unclear I did everything from the bottom up with SMB meaning hardware, software, applications, VM' s, servers, firewalls, email etc.

Most times though they go the cheaper load bearing route and add the studs later for the fire wall. 

I'm looking for a firewall for liability surround the property leaking out to our personally held assets.

Hi Robb,Lenders are not required to use AMC's (Appraisal management company's) but a lot of them do because it creates a "firewall," between the borrower, loan officer, and other parties that might cause liability risk to the lender.Some lenders have their own vetted panels of appraisers (bank or lending company vet's them out prior to assigning the appraisal assignments to them).

I also had to install a 2 hour rated firewall.

|----NASThe ISP does not play a part as the controls are in the router.1) the NAS MUST have a constant address;  that's done with a STATIC address or an Address reservation2) the port forward is from the router, to the NAS address, for the port(s) you need - - and that depends upon the software accessing the NAS3) the remote user access then needs to know the PUBLIC ip address of your router -- see http://checkip.dyndns.org/Just so you know, this setup is NOT protected by any firewall or antivirus so if an intruder probes and finds it, you can expect all kinds of problems, including have those files stolen

When doing so, i am curious to know if i will be required to bring the units up to current code in regards to the firewall and fire suppression system.

2) Our mortgage originator previously was handling all communication with the appraiser through some appraiser firewall.

We failed miserably and I ended up needing to shift the stairs back for headroom/landing requirements, bring in a structural engineer to sign off on work, redoing the plumbing rough-in for tub for fire wall separation between units, constructing a new 1 hr fire wall in basement, etc.

Our main concerns are firewalls and running new electrical, and most importantly, what do we NOT know.