Connection dropping frequently for the last week

[Emil.n]

This last week I have been having issues with my internet connection disappearing every now and then, throughout the day for a minute or more each time. I contacted my ISP and they told me to just unplug the router, there was not much I could do other than that according to them. I checked my router's logs and this is what it looks like, and as someone without any knowledge whatsoever in networking all I see is "DoS Attack". I would really appreaciate it if someone could tell me what's happening and what I could try doing about it. Router is a NETGEAR R6100 and this is affecting all my devices in case that matters.

Spoiler

[DoS Attack: ACK Scan] from source: 31.13.72.14, port 443, Thursday, December 01, 2016 16:44:32
[DoS Attack: ACK Scan] from source: 31.13.72.8, port 443, Thursday, December 01, 2016 16:44:30
[DoS Attack: ACK Scan] from source: 31.13.72.12, port 443, Thursday, December 01, 2016 16:44:29
[DoS Attack: ACK Scan] from source: 31.13.72.8, port 443, Thursday, December 01, 2016 16:44:28
[DoS Attack: ACK Scan] from source: 31.13.72.36, port 443, Thursday, December 01, 2016 16:43:20
[Internet connected] IP address: 188.120.165.221, Thursday, December 01, 2016 16:43:16
[Internet disconnected] Thursday, December 01, 2016 16:42:53
[DoS Attack: ACK Scan] from source: 69.16.175.10, port 80, Thursday, December 01, 2016 16:42:44
[DoS Attack: ACK Scan] from source: 31.13.72.8, port 443, Thursday, December 01, 2016 16:39:50
[DoS Attack: ACK Scan] from source: 31.13.72.36, port 443, Thursday, December 01, 2016 16:38:47
[DoS Attack: ACK Scan] from source: 69.16.175.10, port 80, Thursday, December 01, 2016 16:38:44
[DoS Attack: ACK Scan] from source: 31.13.72.8, port 443, Thursday, December 01, 2016 16:38:41
[Time synchronized with NTP server] Thursday, December 01, 2016 16:38:31
[DoS Attack: ACK Scan] from source: 31.13.72.12, port 443, Thursday, December 01, 2016 16:38:21
[DoS Attack: ACK Scan] from source: 31.13.72.8, port 443, Thursday, December 01, 2016 16:38:09
[Internet connected] IP address: 188.120.165.221, Thursday, December 01, 2016 16:38:06
[Internet disconnected] Thursday, December 01, 2016 16:36:34
[DoS Attack: ACK Scan] from source: 31.13.72.8, port 443, Thursday, December 01, 2016 16:36:34
[Internet disconnected] Thursday, December 01, 2016 16:36:32
[DoS Attack: ACK Scan] from source: 31.13.72.12, port 443, Thursday, December 01, 2016 16:36:21
[DoS Attack: ACK Scan] from source: 109.225.64.9, port 80, Thursday, December 01, 2016 16:36:07
[DHCP IP: 192.168.1.12] to MAC address 8c:00:6d:49:5e:a9, Thursday, December 01, 2016 16:34:53
[DoS Attack: ACK Scan] from source: 69.16.175.10, port 80, Thursday, December 01, 2016 16:34:44
[DoS Attack: ACK Scan] from source: 85.194.254.117, port 443, Thursday, December 01, 2016 16:34:42
[Internet connected] IP address: 188.120.165.221, Thursday, December 01, 2016 16:34:33
[Internet disconnected] Thursday, December 01, 2016 16:34:10
[DoS Attack: ACK Scan] from source: 109.225.64.9, port 80, Thursday, December 01, 2016 16:34:07