Hi All I've been asked to look at a problem with a web filtering system for a business. Ever since they upgraded from a 6.5.x version to a current long term release of RouterOS the filtering (RST Packets) traffic generated by the filter system has been lost/blocked by the router. I have pcap files generated by the router showing the RST packets being generated and sent to the client and server of a tcp connection but captures of the inbound and outbound traffic path do not show these RST packets. rp-filter is turned off, ip connection traffic how been tried on and off. I found someone else asking this question https://forum.mikrotik.com/viewtopic.php?t=149084 the single reply was from someone who did not understand the problem. Does anyone have any ideas ? Thanks Mike