I run a web server and log connections that are dropped. Occasionally, I get a burst of TCP RST packets from some of my clients, like this:
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:29 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Feb 11 11:56:30 SRC=1.2.3.4 TTL=57 SPT=38383 DPT=80 WINDOW=0 RST URGP=0
Is this a RST flood attack, DDOS attack, TCP reset attack or some other phenomenon?