Remove or update "one-liner" :  Block known dirty hosts from reaching your machine

[Block known dirty hosts from reaching your machine](https://linuxcommandlibrary.com/basic/oneliners#1550)

```
wget -qO - http://infiltrated.net/blacklisted|awk '!/#|[a-z]/&&/./{print "iptables -A INPUT -s "$1" -j DROP"}'
```

infiltrated.net is a defunct website.  