I currently have a BM 3.8 server working fine with 1 public and 1 private

I'm testing a second internet provider and was hoping I could just hookup a
second public facing nic and setup say just the web browsing to use this
connection while having the other services continue to use the existing
public facing nic.

Is this possible with BM. If not can someone suggest the device I need to
put in front of BM to allow this.