WNR2000 security issues Repeat DOS attacks

Keep getting repeat DOS attacks / scans from same area?

Why is this?
[admin login] from source 192.168.1.15, Friday, November 18, 2016 23:49:10
[DoS Attack: SYN/ACK Scan] from source: 104.31.4.188, port 80, Friday, November 18, 2016 23:47:17
[DoS Attack: SYN/ACK Scan] from source: 104.31.5.188, port 80, Friday, November 18, 2016 23:42:57
[DoS Attack: ACK Scan] from source: 52.84.118.134, port 443, Friday, November 18, 2016 23:40:45
[DoS Attack: RST Scan] from source: 64.124.217.61, port 443, Friday, November 18, 2016 23:36:47
[DoS Attack: SYN/ACK Scan] from source: 104.28.13.59, port 80, Friday, November 18, 2016 23:27:27
[admin login failure] from source 192.168.1.15, Friday, November 18, 2016 23:24:54
[DoS Attack: SYN/ACK Scan] from source: 104.28.27.52, port 80, Friday, November 18, 2016 23:23:55
[DoS Attack: SYN/ACK Scan] from source: 104.25.161.19, port 80, Friday, November 18, 2016 23:22:06
[DoS Attack: SYN/ACK Scan] from source: 104.28.13.59, port 80, Friday, November 18, 2016 23:19:35
[DoS Attack: SYN/ACK Scan] from source: 104.28.7.9, port 80, Friday, November 18, 2016 23:09:27
[DoS Attack: SYN/ACK Scan] from source: 52.169.89.24, port 80, Friday, November 18, 2016 23:06:00
[DoS Attack: SYN/ACK Scan] from source: 104.31.5.188, port 80, Friday, November 18, 2016 23:03:25
[DoS Attack: SYN/ACK Scan] from source: 104.20.75.193, port 80, Friday, November 18, 2016 23:03:17
[DoS Attack: SYN/ACK Scan] from source: 104.28.27.52, port 80, Friday, November 18, 2016 22:59:02
[DoS Attack: SYN/ACK Scan] from source: 104.28.13.59, port 80, Friday, November 18, 2016 22:54:53
[DoS Attack: SYN/ACK Scan] from source: 104.28.27.52, port 80, Friday, November 18, 2016 22:52:52
[DoS Attack: SYN/ACK Scan] from source: 104.31.83.130, port 80, Friday, November 18, 2016 22:50:01
[DoS Attack: SYN/ACK Scan] from source: 162.247.75.120, port 80, Friday, November 18, 2016 22:49:20
[DoS Attack: SYN/ACK Scan] from source: 104.28.7.9, port 80, Friday, November 18, 2016 22:44:02
[DoS Attack: SYN/ACK Scan] from source: 104.20.75.193, port 80, Friday, November 18, 2016 22:43:16
[DoS Attack: SYN/ACK Scan] from source: 104.25.160.19, port 80, Friday, November 18, 2016 22:37:16
[DoS Attack: SYN/ACK Scan] from source: 104.20.75.193, port 80, Friday, November 18, 2016 22:28:50
[DoS Attack: SYN/ACK Scan] from source: 104.28.7.9, port 80, Friday, November 18, 2016 22:27:02
[DoS Attack: SYN/ACK Scan] from source: 104.28.26.52, port 80, Friday, November 18, 2016 22:25:35
[DoS Attack: SYN/ACK Scan] from source: 104.28.13.59, port 80, Friday, November 18, 2016 22:11:35
[DoS Attack: SYN/ACK Scan] from source: 104.28.7.9, port 80, Friday, November 18, 2016 22:11:10
[DoS Attack: SYN/ACK Scan] from source: 104.25.160.19, port 80, Friday, November 18, 2016 22:09:15
[DoS Attack: SYN/ACK Scan] from source: 104.28.26.52, port 80, Friday, November 18, 2016 22:05:05
[DoS Attack: SYN/ACK Scan] from source: 104.28.13.59, port 80, Friday, November 18, 2016 21:39:18
[DoS Attack: SYN/ACK Scan] from source: 104.25.161.19, port 80, Friday, November 18, 2016 21:37:19
[DHCP IP: 192.168.1.21] to MAC address 70:71:bc:ec:e3:bd, Friday, November 18, 2016 21:36:24
[Access Control] Device HPS5000UP-PC with MAC address 70:71:BC:EC:E3:BD is allow the network, Friday, November 18, 2016 21:36:21
[DoS Attack: ACK Scan] from source: 69.20.19.178, port 5291, Friday, November 18, 2016 21:31:34
[DoS Attack: SYN/ACK Scan] from source: 104.28.13.59, port 80, Friday, November 18, 2016 21:31:31
[DoS Attack: ACK Scan] from source: 69.20.19.178, port 5291, Friday, November 18, 2016 21:31:04
[admin login] from source 192.168.1.15, Friday, November 18, 2016 21:30:58
[DoS Attack: ACK Scan] from source: 69.20.19.178, port 5291, Friday, November 18, 2016 21:30:56
[DoS Attack: SYN/ACK Scan] from source: 104.28.27.52, port 80, Friday, November 18, 2016 21:30:55
[DoS Attack: ACK Scan] from source: 69.20.19.178, port 5291, Friday, November 18, 2016 21:28:50
[DoS Attack: SYN/ACK Scan] from source: 104.28.7.9, port 80, Friday, November 18, 2016 21:20:50
[DoS Attack: SYN/ACK Scan] from source: 162.247.75.120, port 80, Friday, November 18, 2016 21:17:22
[DoS Attack: SYN/ACK Scan] from source: 104.28.7.9, port 80, Friday, November 18, 2016 21:11:59