Can a port be spoofed?

[twalls - Troy Walls <twalls () acxiom com>]

If a customer opens a dedicated port in their firewall and looks for a
dedicated port from my firewall, is it likely to be spoofed.  What is
the level of difficulty?

Thanks
Troy Walls
Acxiom Corp.
501-336-2865

twalls () acxiom com