The AMD LogiCORE™ AXI Firewall IP core propagates AXI traffic from its slave interface (SI) to its master interface (MI), and propagates responses back from the MI. While doing so, the core actively checks for certain potentially-fatal protocol violations in the transfers, and blocks the offending transfer and any further transfers from propagating. The core can be configured to monitor either the MI-side (responses from downstream) or the SI-side (transfers from upstream) for error conditions, allowing the AXI network connected to the opposite interface to continue operating. (MI-side and SI-side firewalls cannot both be enabled in the same IP instance.) A control-register interface on the core can then be used to read information about the error status and to initiate recovery of the firewall.