lots of ACK/FIN filtering

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Hello. list.

when I check my filtering logs, I can see lots of the ACK/FIN filtering logs like below.

Dec 22 20:03:06 server kernel: IN=eth0 OUT= SRC=218.48.8.15 DST=61.xx.xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=126 ID=12670 DF PROTO=TCP SPT=1775 DPT=80 WINDOW=17005 RES=0x00 ACK FIN URGP=0

But I have no problem to connect.

what's the problem and how can I solve this problem?


Thanks in advance.




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