Interconnection reliability issues threat the dependability of highly dependable systems. One of the most challenging interconnection-induced reliability threats is intermittent resistive faults (IRFs). They may occur randomly in time, duration and amplitude in every interconnection. The occurrence rate can vary from a few nanoseconds to months. As a result, evoking and detecting such faults is a major challenge. In this paper, IRF detection at the board level has been investigated by introducing a new digital IRF monitor. This monitor has been validated by using hardware-based fault injection. Two widely used on-board transmission protocols -UART and SPI -have been used as case studies. In addition, one fault management framework -based on the IJTAG standard -has been implemented to collect and characterize information from the monitors. The experimental results show that the proposed monitor is effective in detecting IRFs at the board level.