Stop Traffic From China IP Address Blocks To Protect Your Web Server From Chinese Hackers

If you spend any time monitoring the security of your Internet servers you have noticed that in recent years the majority of hacking attempts and surveillance queries are coming from IP addresses originating in China. Chinese hackers are becoming the most common and pervasive as evidenced by the US government's Titan Rain investigation covered in this article in Time magazine. More recently, Google has expressed serious concerns about hacking attempts originating from China.

The government in China does nothing to stop or even discourage hackers or the illegal copying of copyrighted material created in the US (movies, music, and other intellectual property including your Web site content). As such, we must protect ourselves from the Chinese hackers and content thieves.

Fortunately, this is not hard to do. We'll be covering using an htaccess file with Apache but you can also block if you're using a Windows-based Web server (IIS). You can also choose to block at your router. If you're running a Linux router or firewall with IPTABLES check out the Wizcraft's IPTABLES block lists at

http://www.wizcrafts.net/iptables-blocklists.html
While blocking ranges of IP addresses and the resulting Web traffic originating from China may block some non-hacking traffic, the lack of interest by the Chinese government in cleaning up their act leaves us with little choice. Not to mention that the Chinese government randomly blocks access to US Web sites, including MIT's on-line educational resources. Perhaps if the people of China are denied access to enough sites, their government will consider becoming better global cyber-citizens.

I can, without hesitation, report that since I started blocking Chinese traffic to my Web sites there has been a significant decrease in the number of hacking probes directed at my Web sites.

What Exactly Will Get Blocked ? The method on this page focuses on preventing surfers in China from accessing your Web pages so that they cannot pirate your Web site content (text, graphics, images). The Chinese have a long standing reputation for pirating intellectual property and having no regard for copyright laws so the aim here is to keep slime bags from having an opportunity to steal our stuff. Note that many people wrongly use the terms 'Web' and 'Internet' interchangably. The 'Web' is strictly the HTTP (and HTTPS) protocol used to serve up Web pages. The method presented on this page will not prevent Chinese hackers from having IP-based access to your server over the Internet. Only a firewall can do that. The method presented on this page uses the .htaccess file to tell the Apache Web server software not to respond to Web page requests coming from Chinese addresses. However, if you have a properly hardened Web server, TCP port 80 (which is opened by Apache to service Web page requests) will be the only port open on the server. If you then tell Apache not to respond (on port 80) to requests coming from Chinese addresses your server will, in effect, be protected. Not only will it protect your content from piracy, but it will protect your Web server from any Web-based (port 80-based) attacks or hacks. The use of .htaccess files is part of the Apache web server software so if you are hosting your Web site on an Apache server implementing the method on this page will cost you nothing. If you're not sure if your site is on an Apache server, ask your hosting provider and also verify with that that the use of .htaccess files is enabled for you.

The method of blocking Web traffic from China is done with Deny statements in Apache's .htaccess file. A short example of using this method of blocking is as follows:

order allow,deny
allow from all
deny from 65.19.146.2 220.248.0.0/14

Adding these statements to a .htaccess file on your Apache Web server will block a single address (65.19.146.2) and an entire range of addresses specified by a CIDR block (220.248.0.0/14).

Not Familier With .htaccess Files ? The .htaccess file is typically stored in your Web server's "document root" directory (where your HTML files are stored) and it is used to change the behavior of your Apache Web server. (They are not used on Windows IIS servers.) If you have a Web site you can try creating a .htaccess file and uploading it to your Web site. To create a .htaccess file simply open Notepad (if on a Windows system) or other text editor and copy/paste the block of statements we have below (including the statements in blue) into it. When you save the file you have to prevent Notepad from adding a .txt extension to the file name by enclosing the file name in quotes. When you go to save the file and the Save dialog box opens up remove the .txt that's already in the file name field and enter just ".htaccess" (with the quotes) and click on the Save button. Then FTP the file to your Web site but be sure to use ASCII mode. (If you don't transfer the file in ASCII mode you could hose up your server.) Once the file is on your Web server try to open a Web page on the server using a browser to see if your server is still working OK. If you get an error message instead of your Web page it's likely because your server isn't set to allow the use of .htaccess files. If this is the case simply use your FTP program to delete the file off of your server to restore normal operation.

In order for .htaccess files to work their use must be enabled in the main Apache configuration file. The main Apache configuration file (httpd.conf) needs to have the following statements in it somewhere (they do not have to be next to each other):

AccessFileName .htaccess
AllowOverride Limit

The AllowOverride statement can only be used in a Directory context. If you don't know what that means, you probably don't have your own Apache Web server which means you probably don't have access to the httpd.conf file anyway. However, most Web hosting companies that offer Apache (Linux) servers do have the use of .htaccess files enabled. (If you want to find out how to set up your own Web server see the "Internet Servers" page on our AboutDebian.com site.)

So how do you know what addresses are Chinese addresses? Luckily the Okean.com and Wizcraft.net Web sites maintain block lists of Chinese and Nigerian addresses. To block this traffic copy/paste the following deny statements after the order and allow statements in your .htaccess file like so:

order allow,deny
allow from all
# Get up-to-date list from http://www.okean.com/thegoods.html or (in .htaccess format) http://www.wizcrafts.net/chinese-blocklist.html
# China IP Address Blocks
deny from 58.14.0.0/15 58.16.0.0/13 58.24.0.0/15 58.30.0.0/15 58.32.0.0/11 58.66.0.0/15 58.68.128.0/17 58.82.0.0/15 58.87.64.0/18 58.99.128.0/17 58.100.0.0/15 58.116.0.0/14 58.128.0.0/13 58.144.0.0/16 58.154.0.0/15 58.192.0.0/11 58.240.0.0/12
deny from 59.32.0.0/11 59.64.0.0/13 59.72.0.0/15 59.77.0.0/16 59.78.0.0/15 59.80.0.0/14 59.107.0.0/16 59.108.0.0/14 59.151.0.0/17 59.155.0.0/16 59.172.0.0/14 59.191.0.0/16 59.192.0.0/10
deny from 60.0.0.0/11 60.55.0.0/16 60.63.0.0/16 60.160.0.0/11 60.194.0.0/15 60.200.0.0/13 60.208.0.0/12 60.232.0.0/15 60.235.0.0/16 60.245.128.0/17 60.247.0.0/16 60.252.0.0/16 60.253.128.0/17 60.255.0.0/16
deny from 61.4.80.0/20 61.4.176.0/20 61.8.160.0/20 61.28.0.0/17 61.29.128.0/17 61.45.128.0/18 61.47.128.0/18 61.48.0.0/13 61.87.192.0/18 61.128.0.0/10 61.232.0.0/14 61.236.0.0/15 61.240.0.0/14
deny from 116.1.0.0/16 116.2.0.0/15 116.4.0.0/14 116.8.0.0/14 116.13.0.0/16 116.16.0.0/12 116.52.0.0/14 116.56.0.0/15 116.58.128.0/20 116.58.208.0/20 116.60.0.0/14 116.66.0.0/17 116.69.0.0/16 116.70.0.0/17 116.76.0.0/14 116.89.144.0/20 116.90.184.0/21 116.95.0.0/16 116.112.0.0/14 116.116.0.0/15 116.128.0.0/10 116.192.0.0/16 116.193.16.0/20 116.193.32.0/19 116.194.0.0/15 116.196.0.0/16
deny from 116.198.0.0/16 116.199.0.0/17 116.199.128.0/19 116.204.0.0/15 116.207.0.0/16 116.208.0.0/14 116.212.160.0/20 116.213.64.0/18 116.213.128.0/17 116.214.32.0/19 116.214.64.0/20 116.214.128.0/17 116.215.0.0/16 116.216.0.0/14 116.224.0.0/12 116.242.0.0/15 116.244.0.0/14 116.248.0.0/15 116.252.0.0/15 116.254.128.0/17 116.255.128.0/17
deny from 117.8.0.0/13 117.21.0.0/16 117.22.0.0/15 117.24.0.0/13 117.32.0.0/13 117.40.0.0/14 117.44.0.0/15 117.48.0.0/14 117.53.176.0/20 117.57.0.0/16 117.58.0.0/17 117.59.0.0/16 117.60.0.0/14 117.64.0.0/13 117.72.0.0/15 117.74.64.0/20 117.74.128.0/17 117.75.0.0/16 117.76.0.0/14 117.80.0.0/12 117.100.0.0/15 117.103.16.0/20 117.103.128.0/20 117.106.0.0/15 117.112.0.0/13 117.120.64.0/18 117.120.128.0/17 117.121.0.0/17 117.121.128.0/18 117.121.192.0/21 117.122.128.0/17 117.124.0.0/14 117.128.0.0/10
deny from 118.24.0.0/13 118.64.0.0/15 118.66.0.0/16 118.67.112.0/20 118.72.0.0/13 118.80.0.0/15 118.84.0.0/15 118.88.32.0/19 118.88.64.0/18 118.88.128.0/17 118.89.0.0/16 118.91.240.0/20 118.102.16.0/20 118.112.0.0/13 118.120.0.0/14 118.124.0.0/15 118.126.0.0/16 118.132.0.0/14 118.144.0.0/14 118.178.0.0/16 118.180.0.0/14 118.184.0.0/13 118.192.0.0/12 118.212.0.0/15 118.224.0.0/14 118.228.0.0/15 118.230.0.0/16 118.239.0.0/16 118.242.0.0/16 118.244.0.0/14 118.248.0.0/13
deny from 119.0.0.0/15
deny from 121.0.16.0/20 121.4.0.0/15 121.8.0.0/13 121.16.0.0/12 121.32.0.0/13 121.40.0.0/14 121.46.0.0/15 121.48.0.0/15 121.51.0.0/16 121.52.160.0/19 121.52.208.0/20 121.52.224.0/19 121.55.0.0/18 121.56.0.0/15 121.58.0.0/17 121.58.144.0/20 121.59.0.0/16 121.60.0.0/14 121.68.0.0/14 121.76.0.0/15 121.79.128.0/18 121.89.0.0/16 121.100.128.0/17 121.192.0.0/13 121.201.0.0/16 121.204.0.0/14 121.224.0.0/12 121.248.0.0/14 121.255.0.0/16
deny from 122.0.64.0/18 122.0.128.0/17 122.4.0.0/14 122.8.0.0/13 122.48.0.0/16 122.49.0.0/18 122.51.0.0/16 122.64.0.0/11 122.96.0.0/15 122.102.0.0/20 122.102.64.0/19 122.112.0.0/14 122.119.0.0/16 122.136.0.0/13 122.144.128.0/17 122.156.0.0/14 122.192.0.0/14 122.198.0.0/16 122.200.64.0/18 122.204.0.0/14 122.224.0.0/12 122.240.0.0/13 122.248.48.0/20
deny from 123.0.128.0/18 123.4.0.0/14 123.8.0.0/13 123.49.128.0/17 123.52.0.0/14 123.56.0.0/13 123.64.0.0/11 123.96.0.0/15 123.98.0.0/17 123.99.128.0/17 123.100.0.0/19 123.101.0.0/16 123.103.0.0/17 123.108.128.0/20 123.108.208.0/20 123.112.0.0/12 123.128.0.0/13 123.136.80.0/20 123.137.0.0/16 123.138.0.0/15 123.144.0.0/12 123.160.0.0/12 123.176.80.0/20 123.177.0.0/16 123.178.0.0/15 123.180.0.0/14 123.184.0.0/13 123.196.0.0/15 123.199.128.0/17 123.232.0.0/14 123.244.0.0/14 123.249.0.0/16 123.253.0.0/16
deny from 124.6.64.0/18 124.14.0.0/15 124.16.0.0/15 124.20.0.0/14 124.28.192.0/18 124.29.0.0/17 124.31.0.0/16 124.40.112.0/20 124.40.128.0/18 124.42.0.0/16 124.47.0.0/18 124.64.0.0/15 124.66.0.0/17 124.67.0.0/16 124.68.0.0/14 124.72.0.0/13 124.88.0.0/13 124.108.8.0/21 124.108.40.0/21 124.112.0.0/13 124.126.0.0/15 124.128.0.0/13 124.147.128.0/17 124.156.0.0/16 124.160.0.0/13 124.172.0.0/14 124.192.0.0/15 124.196.0.0/16 124.200.0.0/13 124.220.0.0/14 124.224.0.0/12 124.240.0.0/17 124.242.0.0/16 124.243.192.0/18 124.248.0.0/17 124.249.0.0/16 124.250.0.0/15 124.254.0.0/18
deny from 125.31.192.0/18 125.32.0.0/12 125.58.128.0/17 125.61.128.0/17 125.62.0.0/18 125.64.0.0/11 125.96.0.0/15 125.98.0.0/16 125.104.0.0/13 125.112.0.0/12 125.169.0.0/16 125.171.0.0/16 125.208.0.0/18 125.210.0.0/15 125.213.0.0/17 125.214.96.0/19 125.215.0.0/18 125.216.0.0/13 125.254.128.0/17
deny from 134.196.0.0/16
deny from 159.226.0.0/16
deny from 161.207.0.0/16
deny from 162.105.0.0/16
deny from 166.111.0.0/16
deny from 167.139.0.0/16
deny from 168.160.0.0/16
deny from 192.83.122.0/24 192.124.154.0/24 192.188.170.0/24
deny from 198.17.7.0/24 198.97.132.0/24
deny from 202.0.110.0/24 202.0.160.0/20 202.0.176.0/22 202.4.128.0/19 202.4.252.0/22 202.8.128.0/19 202.10.64.0/20 202.14.88.0/24 202.14.235.0/24 202.14.236.0/23 202.14.238.0/24 202.20.120.0/24 202.22.248.0/21 202.38.0.0/20 202.38.64.0/18 202.38.128.0/21 202.38.136.0/23 202.38.138.0/24 202.38.140.0/22 202.38.144.0/22 202.38.149.0/24 202.38.150.0/23 202.38.152.0/22 202.38.156.0/24 202.38.158.0/23 202.38.160.0/23 202.38.164.0/22 202.38.168.0/21 202.38.176.0/23 202.38.184.0/21 202.38.192.0/18 202.41.152.0/21 202.41.240.0/20 202.46.32.0/19 202.46.224.0/20
deny from 202.60.112.0/20 202.69.4.0/22 202.69.16.0/20 202.70.0.0/19 202.74.8.0/21 202.75.208.0/20 202.85.208.0/20 202.90.0.0/22 202.90.224.0/20 202.90.252.0/22 202.91.0.0/22 202.91.128.0/22 202.91.176.0/20 202.91.224.0/19 202.92.0.0/22 202.92.252.0/22 202.93.0.0/22 202.93.252.0/22 202.94.0.0/19 202.95.0.0/19 202.95.252.0/22 202.96.0.0/12
deny from 202.112.0.0/13 202.120.0.0/15 202.122.0.0/19 202.122.32.0/21 202.122.64.0/19 202.122.112.0/21 202.122.128.0/24 202.123.96.0/20 202.124.24.0/21 202.125.176.0/20 202.127.0.0/18 202.127.112.0/20 202.127.128.0/19 202.127.160.0/21 202.127.192.0/18 202.130.0.0/19 202.130.224.0/19 202.131.16.0/21 202.131.48.0/20 202.131.208.0/20 202.136.48.0/20 202.136.208.0/20 202.136.224.0/20 202.141.160.0/19 202.142.16.0/20 202.143.16.0/20 202.148.96.0/19 202.149.160.0/20 202.149.224.0/19
deny from 202.150.16.0/20 202.152.176.0/20 202.153.48.0/20 202.158.160.0/19 202.160.176.0/20 202.164.0.0/20 202.164.25.0/24 202.165.96.0/21 202.165.176.0/20 202.165.208.0/20 202.168.160.0/19 202.170.128.0/19 202.170.216.0/21 202.173.8.0/21 202.173.224.0/19 202.179.240.0/20 202.180.128.0/19 202.181.112.0/20 202.189.80.0/20 202.192.0.0/12
deny from 203.18.50.0/24 203.79.0.0/20 203.80.144.0/20 203.81.16.0/20 203.83.56.0/21 203.86.0.0/18 203.86.64.0/19 203.88.0.0/22 203.88.32.0/19 203.88.192.0/19 203.89.0.0/22 203.90.0.0/22 203.90.128.0/18 203.90.192.0/19 203.91.32.0/19 203.91.96.0/20 203.91.120.0/21 203.92.0.0/22 203.92.160.0/19 203.93.0.0/16 203.94.0.0/18 203.95.0.0/21 203.95.96.0/19 203.99.16.0/20 203.99.80.0/20
deny from 203.100.32.0/20 203.100.80.0/20 203.100.96.0/19 203.100.192.0/20 203.110.160.0/19 203.118.192.0/19 203.119.24.0/21 203.119.32.0/22 203.128.32.0/19 203.128.96.0/19 203.128.128.0/19 203.130.32.0/19 203.132.32.0/19 203.134.240.0/21 203.135.96.0/19 203.135.160.0/20 203.148.0.0/18 203.152.64.0/19 203.156.192.0/18 203.158.16.0/21 203.161.192.0/19 203.166.160.0/19 203.171.224.0/20 203.174.7.0/24 203.174.96.0/19 203.175.128.0/19 203.175.192.0/18 203.176.168.0/21 203.184.80.0/20 203.187.160.0/19 203.190.96.0/20 203.191.16.0/20 203.191.64.0/18 203.191.144.0/20 203.192.0.0/19 203.196.0.0/22
deny from 203.207.64.0/18 203.207.128.0/17 203.208.0.0/20 203.208.16.0/22 203.208.32.0/19 203.209.224.0/19 203.212.0.0/20 203.212.80.0/20 203.222.192.0/20 203.223.0.0/20
deny from 210.2.0.0/19 210.5.0.0/19 210.5.32.0/20 210.5.144.0/20 210.12.0.0/15 210.14.64.0/19 210.14.112.0/20 210.14.128.0/17 210.15.0.0/17 210.15.128.0/18 210.16.128.0/18 210.21.0.0/16 210.22.0.0/16 210.23.32.0/19 210.25.0.0/16 210.26.0.0/15 210.28.0.0/14 210.32.0.0/12 210.51.0.0/16 210.52.0.0/15 210.56.192.0/19 210.72.0.0/14 210.76.0.0/15 210.78.0.0/16 210.79.64.0/18 210.79.224.0/19 210.82.0.0/15 210.87.128.0/18 210.185.192.0/18 210.192.96.0/19
deny from 211.64.0.0/13 211.80.0.0/12 211.96.0.0/13 211.136.0.0/13 211.144.0.0/12 211.160.0.0/13
deny from 218.0.0.0/11 218.56.0.0/13 218.64.0.0/11 218.96.0.0/14 218.104.0.0/14 218.108.0.0/15 218.192.0.0/12 218.240.0.0/13 218.249.0.0/16
deny from 219.72.0.0/16 219.82.0.0/16 219.128.0.0/11 219.216.0.0/13 219.224.0.0/12 219.242.0.0/15 219.244.0.0/14
deny from 220.101.192.0/18 220.112.0.0/14 220.152.128.0/17 220.154.0.0/15 220.160.0.0/11 220.192.0.0/12 220.231.0.0/18 220.231.128.0/17 220.232.64.0/18 220.234.0.0/16 220.242.0.0/15 220.248.0.0/14
deny from 221.0.0.0/13 221.8.0.0/14 221.12.0.0/17 221.12.128.0/18 221.13.0.0/16 221.14.0.0/15 221.122.0.0/15 221.129.0.0/16 221.130.0.0/15 221.133.224.0/19 221.136.0.0/15 221.172.0.0/14 221.176.0.0/13 221.192.0.0/14 221.196.0.0/15 221.198.0.0/16 221.199.0.0/17 221.199.128.0/18 221.199.192.0/20 221.199.224.0/19 221.200.0.0/13 221.208.0.0/12 221.224.0.0/12
deny from 222.16.0.0/12 222.32.0.0/11 222.64.0.0/11 222.125.0.0/16 222.126.128.0/17 222.128.0.0/12 222.160.0.0/14 222.168.0.0/13 222.176.0.0/12 222.192.0.0/11 222.240.0.0/13 222.248.0.0/16 222.249.0.0/17 222.249.128.0/18 222.249.192.0/19 222.249.224.0/20 222.249.240.0/21 222.249.248.0/23
# Korea IP addresses follow:
deny from 58.72.0.0/13 58.239.0.0/16 58.140.0.0/14 59.0.0.0/11 59.186.0.0/15 61.248.0.0/13 121.128.0.0/10 122.99.128.0/17 124.50.87.161 125.128.0.0/11 125.176.0.0/12 143.248.0.0/16 211.41.224.0/19 211.104.0.0/13 211.112.0.0/13 211.211.36.0/23 218.144.138.0/26 219.240.0.0/15 219.248.0.0/13 221.128.0.0/12 221.144.0.0/12 221.160.0.0/13 221.168.0.0/16 221.163.46.0/24
# Malaysia
deny from 60.48.0.0/13 202.71.102.0/24 203.223.128.0/19
# Thailand
deny from 58.137.13.0/24 203.113.13.0/24 203.144.144.0/24 203.149.0.0/18 203.155.0.0/16
# Vietnam
deny from 58.187.112.0/20 125.234.0.0/15 203.113.128.0/18

To also block Nigerian traffic copy/paste these deny statements after the order and allow statements in your .htaccess file:

# Get up-to-date list from http://www.wizcrafts.net/nigerian-blocklist.html
# Nigeria IP Address Blocks
deny from 12.166.96.32/27 41.202.0.0/17 41.202.128.0/19 41.204.0.0/17 41.204.128.0/18 41.204.224.0/19 41.205.160.0/19 41.207.0.0/19 41.207.192.0/19 41.208.128.0/18 41.210.0.0/18 41.211.192.0/18 41.219.192.0/18 41.220.0.0/16 41.222.24.0/21 41.222.40.0/21 41.222.64.0/21 41.223.24.0/22 41.223.248.0/22 41.248.0.0/16 41.250.0.0/16 61.11.230.112/29 62.56.128.0/17 62.56.235.0/24 62.56.236.0/24 62.56.244.0/22 62.56.248.0/24 62.128.160.0/20 62.173.32.0/19 62.192.128.0/19 62.192.140.250 62.193.160.0/19
deny from 63.70.178.0/24 63.73.58.0/24 63.100.193.0/24 63.103.138.0/24 63.103.139.64/26 63.103.140.0/22 63.109.245.168/29 63.109.248.128/25 63.122.154.0/24 64.14.48.128/26 62.24.96.0/19 64.86.155.0/24 64.86.210.0/23 64.110.30.0/24 64.110.31.0/24 64.110.64.16/28 64.110.76.0/23 64.110.81.0/24 64.110.93.16/28 64.110.93.176/28 64.110.147.0/24 64.201.33.0/24 65.209.91.0/24 65.209.92.0/24 66.18.64.0/19 66.110.31.0/24 66.178.0.0/17 66.199.241.82 66.205.20.0/24 77.220.0.0/20
deny from 80.78.16.168/29 80.78.16.176/28 80.78.16.192/28 80.78.17.0/24 80.78.18.88/29 80.78.18.96/27 80.78.18.128/29 80.87.64.0/19 80.88.128.0/20 80.88.129.0/24 80.88.130.0/24 80.88.131.0/24 80.88.132.0/26 80.88.132.64/27 80.88.132.104/29 80.88.132.128/26 80.88.132.192/27 80.88.132.224/28 80.88.132.240/29 80.88.133.0/25 80.88.134.0/26 80.88.134.64/29 80.88.135.0/24 80.88.136.0/24 80.88.137.0/24 80.88.138.0/25 80.88.138.128/26 80.88.138.192/27 80.88.139.0/25 80.88.139.128/26 80.88.139.192/27 80.88.139.224/28
deny from 80.88.140.0/24 80.88.141.0/25 80.88.141.128/27 80.88.142.0/24 80.88.143.128/24 80.88.144.0/23 80.88.146.0/24 80.88.147.0/24 80.88.148.0/24 80.88.149.0/25 80.88.149.128/26 80.88.149.192/28 80.88.150.0/24 80.88.151.0/24 80.88.152.0/24 80.88.153.0/24 80.88.154.32/27 80.88.154.72/29 80.88.154.80/29 80.88.154.96/28 80.88.155.0/25 80.88.155.128/27 80.88.155.160/29 80.89.176.0/24
deny from 80.179.102.0/24 80.179.107.64/27 80.179.107.224/29 80.179.128.0/17 80.231.4.0/23 80.240.192.0/20 80.247.136.0/24 80.247.137.0/24 80.247.141.32/27 80.247.141.64/26 80.247.141.128/25 80.247.142.0/24 80.247.147.16/28 80.247.147.32/29 80.247.147.64/27 80.247.147.96/28 80.247.151.0/24 80.247.153.0/24 80.247.156.0/26 80.247.156.128/28 80.247.157.0/24 80.247.159.0/24 80.248.0.0/20 80.248.64.0/23 80.248.70.0/20 80.248.64.0/20 80.250.32.0/20
deny from 80.255.40.48/28 80.255.40.96/29 80.255.40.112/28 80.255.40.128/28 80.255.40.192/28 80.255.40.224/27 80.255.40.240/28 80.255.43.0/24 80.255.46.0/29 80.255.46.16/28 80.255.46.64/29 80.255.58.160/27 80.255.58.192/26 80.255.59.19 80.255.59.0/24
deny from 81.18.32.0/20 81.18.40.0/24 81.18.42.0/24 81.23.194.0/27 81.23.194.64/27 81.23.194.128/25 81.23.195.0/24 81.23.196.0/25 81.23.196.128/29 81.23.200.0/21 81.24.0.0/20 81.91.224.0/20 81.199.0.0/16 81.199.6.0/24 81.199.7.0/24 81.199.48.0/20 81.199.72.0/22 81.199.76.0/24 81.199.82.0/23 81.199.84.0/22 81.199.84.0/24 81.199.85.0/24 81.199.86.0/24 81.199.87.0/24 81.199.88.0/24 81.199.89.0/24 81.199.90.0/24 81.199.94.0/23 81.199.108.0/22 81.199.124.0/22 81.199.172.160/27 81.199.240.0/21 82.128.0.0/17 82.205.242.0/23
deny from 83.137.61.0/24 83.138.167.40/29 83.229.0.0/17 84.254.188.3 84.254.128.0/18 155.239.0.0/16 192.116.64.0/18 192.116.128.0/18 192.116.152.0/21 193.110.2.0/23 193.189.0.0/18 193.189.64.0/23 193.189.128.0/24 193.194.64.0/19 193.219.192.0/18 193.220.0.0/16 193.220.26.0/24 193.220.30.0/26 193.220.30.64/27 193.220.31.0/26 193.220.31.64/27 193.220.45.0/25 193.220.47.0/25 193.220.77.0/26 193.220.187.0/26 193.220.187.128/27
deny from 195.8.22.0/24 195.24.192.0/19 195.44.168.0/21 195.44.176.0/21 195.137.13.0/24 195.137.14.0/24 195.166.224.0/19 195.219.176.0/24 195.225.62.0/23 195.245.108.0/23 196.0.0.0/9 196.128.0.0/10 196.192.0.0/12 196.220.0.0/19 198.54.0.0/16
deny from 204.118.170.0/24 208.70.0.0/21 208.78.56.0/21 209.88.163.0/24 209.101.84.0/24 209.159.160.0/20 209.198.240.0/23 209.198.242.16/28 209.198.242.96/29 209.198.242.104/30 209.198.242.108/31 209.198.242.128/27 209.198.246.240/28 212.49.64.0/19 212.60.64.0/19 212.85.192.0/19 212.96.0.0/19 212.100.64.0/19 212.165.128.0/17 212.165.132.64/27 212.165.135.0/24 212.165.140.16/29 212.165.140.64/26 212.165.140.128/25 212.165.141.0/24 212.165.147.0/26 212.165.147.128/26 212.165.183.0/24 212.199.108.0/24 212.199.251.0/24 212.247.93.0/24
deny from 213.136.96.0/19 213.140.62.0/23 213.150.192.0/23 213.154.64.0/19 213.166.160.0/19 213.181.64.0/19 213.185.96.0/21 213.185.106.0/24 213.185.112.0/24 213.185.113.0/26 213.185.113.64/27 213.185.113.96/27 213.185.118.192/26 213.185.124.0/24 213.187.135.0/24 213.187.145.0/24 213.211.128.0/18 213.211.188.0/24 213.232.96.0/24 213.255.193.0/24 213.255.194.0/24 213.255.195.0/24 213.255.198.0/24 213.255.199.0/24
deny from 216.72.104.0/21 216.74.187.0/24 216.118.252.0/24 216.118.253.0/24 216.129.147.128/28 216.129.159.0/24 216.133.174.0/24 216.139.160.0/19 216.139.176.136/29 216.147.132.144/28 216.147.132.160/28 216.147.134.0/24 216.147.159.0/24 216.185.79.0/24 216.236.200.96/28 216.236.202.96/28 216.236.205.0/24 216.236.222.128/26 216.250.195.0/27 216.250.195.64/26 216.250.221.0/24 216.250.222.0/24 216.252.176.0/24 216.252.177.0/24 216.252.231.0/25 216.252.245.0/24
deny from 217.10.163.128/26 217.10.163.192/27 217.10.163.224/27 217.10.166.0/26 217.10.166.64/28 217.10.169.0/24 217.10.170.0/24 217.10.171.0/24 217.10.173.0/26 217.10.182.0/27 217.10.184.0/24 217.14.80.0/20 217.15.124.0/25 217.20.240.0/20 217.20.241.0/25 217.20.241.128/29 217.20.241.136/29 217.20.241.144/28 217.20.241.160/29 217.20.241.168/29 217.20.241.176/29 217.20.241.184/29 217.20.241.192/29 217.20.241.200/29 217.20.241.208/29 217.20.242.0/24 217.20.243.16/28 217.20.243.32/27 217.78.64.0/20
deny from 217.117.0.0/20 217.146.3.144/28 217.146.3.160/28 217.146.3.176/29 217.146.3.224/27 217.146.4.64/26 217.146.5.0/24 217.146.6.0/25 217.146.6.160/27 217.146.7.0/24 217.146.8.0/25 217.146.9.0/24 217.146.10.128/25 217.146.11.0/25 217.146.12.0/24 217.146.13.0/24 217.146.14.0/25 217.146.15.0/25 217.146.16.0/27 217.146.16.32/29 217.168.112.0/20 217.194.140.0/22 217.194.144.0/20 217.199.144.0/20 217.212.242.0/23

To also block problem Russian traffic copy/paste these deny statements after the order and allow statements in your .htaccess file:

# Get up-to-date list from http://www.wizcrafts.net/russian-blocklist.html
# Russia and Ukraine and Bulgaria and Romania and Latvia and Estonia
deny from 77.120.0.0/14
deny from 78.106.0.0/15
deny from 79.120.0.0/17
deny from 80.73.64.0/21 80.85.176.0/20
deny from 81.19.64.0/19 81.95.144.0/20 81.176.0.0/15
deny from 82.76.0.0/14 82.103.64.0/18 82.138.6.128/25 82.144.192.0/19 82.151.112.0/21 82.160.203.0/24
deny from 83.219.129.0/24 83.237.0.0/16
deny from 85.14.35.0/24 85.112.112.0/20 85.140.0.0/15 85.142.0.0/15 85.192.60.0/23 85.249.128.0/19 85.255.112.0/20
deny from 86.127.19.0/24
deny from 87.99.64.0/19 87.103.192.0/20 87.120.16.0/20 87.242.116.0/23
deny from 89.122.0.0/16 89.37.144.0/21 89.111.176.0/20 89.175.0.0/16 89.178.0.0/15 89.190.224.0/19
deny from 91.76.0.0/14 91.124.0.0/16
deny from 141.85.0.0/16
deny from 192.129.3.0/24
deny from 193.39.113.0/24 193.47.166.0/24 193.178.144.0/22
deny from 194.44.36.0/24 194.186.0.0/16
deny from 195.28.32.0/19 195.34.224.0/19 195.95.218.0/23 195.5.116.0/23 195.137.200.0/23 195.138.198.0/24 195.189.246.0/23 195.208.0.0/15 195.225.176.0/22 195.239.0.0/16 195.242.98.0/23 195.244.128.128/25 195.245.112.0/23
deny from 212.24.32.0/19 212.58.192.0/19 212.158.160.0/20
deny from 213.91.128.0/17 213.140.96.0/19 213.154.192.0/19 213.242.12.0/22 213.248.48.0/20
deny from 217.12.240.0/20 217.16.16.0/20 217.77.208.0/20 217.174.96.0/20