OT Conduit / Firewall Ruleset Linter

Paste the firewall rules between your Purdue zones and this linter checks them against ISA/IEC 62443 zone-and-conduit practice — catching IT→OT any-any allows, inbound remote access into the control floor, conduits that skip the IT/OT DMZ, plaintext management into OT, control-protocol writes from outside the cell, and shadowed or overly-broad rules. It parses and lints entirely in your browser; no rule ever leaves the page.