Informational

nping --tcp -c 1 -p 50 --flags rst --flags ack --flags urg --flags fin --flags syn --flags psh --df --data-string 'Anonymous' 192.168.0.20

The 3f stands out, I wish I could set the evil bit with nping.

22:57:20.072093 IP (tos 0x0, ttl 64, id 50219, offset 0, flags [DF], proto TCP (6), length 49)
    192.168.0.165.30149 > 192.168.0.20.50: Flags [FSRP.U], cksum 0x360f (correct), seq 2207896699:2207896708, ack 2871421896, win 1480, urg 0, length 9 [RST Anonymous]

0x0000:  4500 0031 c42b 4000 4006 f491 c0a8 00a5
0x0010:  c0a8 0014 75c5 0032 8399 d47b ab26 6bc8
0x0020:  503f 05c8 360f 0000 416e 6f6e 796d 6f75
0x0030:  73