Dos attack/back door?

Probably false positives. 

What is the device at 192.168.1.12? Thats on your LAN side of the router. 

 

Do a whois look up on 185.151.107.102

 

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% The objects are in RPSL format.
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% Information related to '185.151.107.96 - 185.151.107.127'

% Abuse contact for '185.151.107.96 - 185.151.107.127' is 'abuse@ukrhub.net'

inetnum: 185.151.107.96 - 185.151.107.127
netname: UKRCOM-CUSTOMER-NET
country: UA
status: ASSIGNED PA
created: 2018-08-09T12:37:38Z
last-modified: 2018-08-09T12:37:38Z
source: RIPE
admin-c: YZ42-RIPE
tech-c: UHUB-RIPE
mnt-by: YZ42-RIPE-MNT
remarks: Customer connection

person: Koblyuk Andrei
address: vul. S. Khokhlovyh, 15
address: Kiev, Ukraine, 04050
phone: +380 44 2055570
e-mail: hostmaster@ukrhub.net
nic-hdl: UHUB-RIPE
notify: yuriz@ukr-com.net
mnt-by: YZ42-RIPE-MNT
created: 2007-05-10T07:08:53Z
last-modified: 2017-03-06T11:32:53Z
source: RIPE

person: Yuri Zlenko
address: 04119, Ukraine, Kiev
address: vul. Simyi Khokhlovyh, 15, 3-rd floor
phone: +380 44 205-5514
fax-no: +380 44 205-5525
e-mail: yuriz@ukr-com.net
nic-hdl: YZ42-RIPE
notify: yuriz@ukr-com.net
mnt-by: YZ42-RIPE-MNT
created: 2001-12-07T15:14:10Z
last-modified: 2017-03-06T11:28:28Z
source: RIPE

% Information related to '185.151.104.0/22AS12593'

route: 185.151.104.0/22
origin: AS12593
descr: Ukrcom, Ltd.
mnt-by: YZ42-RIPE-MNT
created: 2016-05-10T10:02:11Z
last-modified: 2016-05-10T10:02:46Z
source: RIPE

% This query was served by the RIPE Database Query Service version 1.103 (WAGYU)