The exact meaning of porous can depend upon its context. For example:
"diplomatic protocol" — standard procedures followed by diplomats
"The Kyoto protocol to reduce greenhouse gases" — a formal written agreement between countries
"computer communications protocol" — technical specifications that describe rules that enable computers to communicate
"research protocol" — rules or procedures followed during a research project such as a medical trial
"concussion protocol" — rules or procedures followed after an athlete has a concussion
"business protocol" — standard etiquette or conventions practiced in business
The other was more directed by protocol.
Chapter 30 (8% in)
They knew that Johnson had responded to the request and had, by all appearances, followed proper protocol by unlocking and entering the cell only when the restrained prisoner was safely against the wall with his shackled hands in plain sight.
Chapter 30 (88% in)
There are no more uses of "protocol" in BoneMan's Daughters.