kindly your support to explain the below in the log
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03:39:34 ipsec,info respond new phase 1 (Identity Protection): "MY IP"[500]<=>216.218.206.118[36735]
03:39:34 ipsec,error 216.218.206.118 failed to get valid proposal.
03:39:34 ipsec,error 216.218.206.118 failed to pre-process ph1 packet (side: 1, status 1).
03:39:34 ipsec,error 216.218.206.118 phase1 negotiation failed.
06:27:58 pptp,info TCP connection established from 185.156.177.153
06:27:58 pptp,info TCP connection established from 185.156.177.153
06:27:58 pptp,info TCP connection established from 185.156.177.153
is it an attack?
and how can i stop it?