I have a problem with water entering my house and I’m looking for advice on how to fix it.

The house has a full basement on poured walls that includes the area under the front porch.  The “floor” of the porch was conventionally framed, then covered with plywood and a shower pan liner material, then a layer of mortar and a brick pavers in a herringbone pattern.  The porch is fully under roof.

The problem is that in Atlanta we get a lot of storms with blowing rain and often water will blow onto the porch even though it is under roof.   When this happens, water will pool (porch should have been better sloped) and somehow find its way through the brick into the basement.  My office happens to be under the porch and the last time this happened it cost me my computer. 

There are no visible cracks in the porch surface, but  I’m sure small cracks have developed in the mortar joints and possibly even a few of the pavers over the 15 years since installation.  I’m also not sure how the water is getting through the liner material, but it clearly is so there’s not much I can do about that except keep water from getting to it.  Is there a prodcut available to waterproof the brick?  I don’t want a “gloss” finish but something that sheds water without changing the appearance of the brick too much would be ideal.

Any advice would be appreciated.