Blocking Network Attackers

In Using Odroid as IP Router I wrote about using my Odroid as router and firewall. Additionally I inspect who tries to log-in to my machines using the lastb command. Sample output is below:

$ lastb
admin    ssh:notty    202.166.220.10   Mon Oct  1 09:51 - 09:51  (00:00)
admin    ssh:notty    202.166.220.10   Mon Oct  1 09:50 - 09:50  (00:00)
admin    ssh:notty    14.162.42.98     Mon Oct  1 09:50 - 09:50  (00:00)
admin    ssh:notty    14.162.42.98     Mon Oct  1 09:50 - 09:50  (00:00)
telecoma ssh:notty    197.46.98.211    Mon Oct  1 09:50 - 09:50  (00:00)
telecoma ssh:notty    197.46.98.211    Mon Oct  1 09:50 - 09:50  (00:00)
ubnt     ssh:notty    2.235.144.121    Mon Oct  1 09:50 - 09:50  (00:00)
ubnt     ssh:notty    2.235.144.121    Mon Oct  1 09:50 - 09:50  (00:00)
root     ssh:notty    78.111.43.138    Mon Oct  1 09:50 - 09:50  (00:00)
admin    ssh:notty    96.89.181.5      Mon Oct  1 09:50 - 09:50  (00:00)
admin    ssh:notty    96.89.181.5      Mon Oct  1 09:50 - 09:50  (00:00)
Admin    ssh:notty    139.5.159.74     Mon Oct  1 09:50 - 09:50  (00:00)
Admin    ssh:notty    139.5.159.74     Mon Oct  1 09:50 - 09:50  (00:00)
admin    ssh:notty    183.89.73.176    Mon Oct  1 09:50 - 09:50  (00:00)
user     ssh:notty    115.178.98.57    Mon Oct  1 09:50 - 09:50  (00:00)
user     ssh:notty    115.178.98.57    Mon Oct  1 09:50 - 09:50  (00:00)
auxiliar ssh:notty    118.221.123.81   Mon Oct  1 06:53 - 06:53  (00:00)
auxiliar ssh:notty    118.221.123.81   Mon Oct  1 06:53 - 06:53  (00:00)
debian   ssh:notty    180.76.162.111   Mon Oct  1 02:39 - 02:39  (00:00)
debian   ssh:notty    180.76.162.111   Mon Oct  1 02:39 - 02:39  (00:00)
admin    ssh:notty    123.21.175.214   Mon Oct  1 02:24 - 02:24  (00:00)
admin    ssh:notty    123.21.175.214   Mon Oct  1 02:24 - 02:24  (00:00)
admin    ssh:notty    183.157.189.232  Mon Oct  1 02:24 - 02:24  (00:00)
admin    ssh:notty    183.157.189.232  Mon Oct  1 02:24 - 02:24  (00:00)
admin    ssh:notty    181.211.61.234   Mon Oct  1 02:23 - 02:23  (00:00)
admin    ssh:notty    181.211.61.234   Mon Oct  1 02:23 - 02:23  (00:00)
user1    ssh:notty    186.149.47.141   Mon Oct  1 00:34 - 00:34  (00:00)
user1    ssh:notty    186.149.47.141   Mon Oct  1 00:34 - 00:34  (00:00)
support  ssh:notty    42.61.24.202     Mon Oct  1 00:08 - 00:08  (00:00)
support  ssh:notty    42.61.24.202     Mon Oct  1 00:08 - 00:08  (00:00)
support  ssh:notty    42.61.24.202     Mon Oct  1 00:08 - 00:08  (00:00)
support  ssh:notty    42.61.24.202     Mon Oct  1 00:08 - 00:08  (00:00)

Furthermore I use Fail2ban. This way I gather a number of suspicious IP addresses which apparently do not have best intentions, so I better block them completely. Using

$ lastb > L
$ perl -ne 'if (/\s+(\d{1,3}\.\d{1,3}\.\d{1,3})\.\d{1,3}\s+/) { printf("-A PREROUTING -s %s.0/24 -i ethusb0 -j DROP\n",$1); }' L 

Below is my list of addresses which I block. This list is somewhat similar to the list of hosts given in Suppressing Advertisement on Web-Pages a.k.a. Ad-Blocking. Watch out if you use that many iptables rules that a low powered machine like a Raspberry Pi or Odroid will significantly diminish network performance.

*raw
:PREROUTING ACCEPT [979:162220]
:OUTPUT ACCEPT [357:49972]
-A PREROUTING -s 101.251.243.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 101.81.106.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 101.89.141.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 101.99.23.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 103.114.105.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 103.19.141.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 103.199.162.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 103.205.6.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 103.207.37.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 103.210.135.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 103.212.128.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 103.219.205.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 103.89.91.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 104.248.50.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 105.112.82.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 106.253.81.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 108.52.25.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 109.211.153.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 109.224.22.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 109.238.208.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 109.30.221.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 109.74.67.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 109.86.227.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 109.87.85.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 109.99.238.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 110.77.246.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 111.185.126.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 111.193.175.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 111.249.112.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 111.251.29.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 111.40.119.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 1.119.184.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 112.225.145.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 112.25.130.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 112.78.139.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 112.85.42.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 112.95.232.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.108.72.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.161.81.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.172.113.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.172.115.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.172.189.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.172.248.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.172.255.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.172.29.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.173.100.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.173.111.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.173.13.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.173.160.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.173.202.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.173.210.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.173.5.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.173.8.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.177.118.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.178.94.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.179.74.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.190.235.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.194.133.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.194.137.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.194.140.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.195.167.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.195.168.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 113.200.135.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 114.36.84.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 114.89.95.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 115.165.216.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 115.167.34.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 115.178.98.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 115.186.130.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 115.231.218.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 115.248.207.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 115.74.212.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 115.84.92.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 116.104.58.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 116.104.72.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 116.107.173.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 116.15.113.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 116.31.116.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 1.169.227.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 117.102.230.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 117.1.122.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 117.1.210.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 117.1.86.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 117.200.76.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 117.50.7.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 117.6.240.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 117.7.195.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 118.150.129.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 118.150.144.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 118.189.9.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 118.221.123.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 118.85.194.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 119.160.139.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 119.60.14.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 120.52.23.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 120.52.96.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 121.124.124.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 121.165.33.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 121.210.91.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 1.221.192.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 122.155.197.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 122.2.223.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.16.127.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.17.67.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.18.17.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.20.114.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.20.247.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.20.30.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.205.133.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.205.145.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.21.101.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.21.125.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.21.175.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.21.177.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.21.184.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.21.216.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.21.243.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.21.25.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.21.69.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.22.0.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.22.245.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.24.193.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.249.27.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 123.249.79.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 124.191.200.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 124.6.231.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 124.65.141.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 125.227.74.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 126.24.162.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 129.126.204.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 131.108.164.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 134.236.243.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 138.118.235.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 138.118.5.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 138.204.69.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 138.204.70.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 138.204.71.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 139.162.122.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 139.217.198.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 139.5.159.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 140.115.70.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.162.134.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.162.147.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.162.42.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.167.153.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.168.73.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.169.108.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.169.140.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.169.156.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.169.215.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.169.238.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.169.5.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.169.64.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.172.172.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.177.255.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.177.53.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.177.72.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.186.129.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.186.178.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.186.203.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.186.212.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.186.250.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.186.42.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.187.25.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.187.36.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.187.39.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.187.57.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.191.193.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.203.68.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.226.224.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.230.41.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.231.31.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.231.40.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.231.54.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.232.185.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 143.176.197.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 143.208.79.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 143.255.154.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 143.255.155.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 14.33.133.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 145.131.103.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 145.249.104.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 146.66.183.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 148.101.254.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 148.101.96.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 151.252.133.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 151.80.173.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 1.52.203.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 154.72.161.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 155.4.207.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 156.194.146.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 156.210.166.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 156.210.236.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 156.212.19.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 156.222.169.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 159.192.230.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 159.192.247.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 163.172.71.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 168.194.153.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 168.205.38.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.224.77.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.229.168.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.229.235.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.234.36.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.238.189.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.240.62.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.241.191.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.241.50.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.253.87.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.35.167.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.35.175.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 171.5.64.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 173.218.30.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 173.220.93.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 174.143.169.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 174.52.127.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 175.101.158.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 175.110.19.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 175.205.114.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 176.193.242.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 176.215.3.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 176.23.168.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 176.28.141.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 177.10.106.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 177.104.242.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 177.161.66.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 177.190.84.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 177.38.190.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 178.127.10.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 178.132.185.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 178.140.189.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 178.234.28.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 178.253.240.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 178.47.130.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 179.127.146.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 179.146.140.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 179.42.221.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 180.101.88.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 180.178.100.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 180.178.108.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 180.183.108.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 180.183.43.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 180.189.78.0/24 -i ethusb0 -j DROP
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-A PREROUTING -s 85.30.248.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 87.122.109.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 87.202.60.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 87.214.88.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 88.190.58.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 88.205.170.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 88.247.165.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 90.11.227.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 90.189.145.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 90.84.246.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 90.90.90.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 91.115.252.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 91.134.154.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 91.162.239.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 91.201.170.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 91.225.163.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 91.237.17.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 92.154.122.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 93.163.148.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 93.183.185.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 93.42.75.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 93.61.31.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 93.76.245.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 95.104.118.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 95.107.198.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 95.107.241.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 96.51.185.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 96.59.65.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 96.89.181.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 96.9.69.0/24 -i ethusb0 -j DROP
-A PREROUTING -s 99.252.112.0/24 -i ethusb0 -j DROP

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