I'm getting thousands of these a day, most times (99.99%) with internal sources, sometimes with an external source.Firmware is 17.1.3 MR3
I have two XG applainces, one 310 and 105w. On the XG310 17.5.0 GA and on XG105w 17.5.3 MR-3. On both devices I have "Data sent on stream after TCP Reset received"Then on 105w I have done "set ips tcp_option detect_anomalies disable" and there is no more that kind of network intrusions in the last two hours. I will be watching and when it is ok I will try to implement this on bigger XG.