Because I just needed to remind myself of this, here are a couple of links with suggestions foe less accidentally-racist computing terminology:
Firstly, Kerri Miller suggests blocklist / safelist for naming deny / allow data sources.
Less briefly, Bryan Liles got lots of suggestions for better distributed systems terminology. If you use a wider vocabulary to describe your systems, you can more quickly give your reader a more precise idea of how your systems work, and the relative roles of their parts.
Tony Finch – blog