Re: Netfilter fails to filter traffic from a netblock?

[Anand Buddhdev <anandb@xxxxxxxx>]

On 19/04/2020 14:58, Jeffrey Walton wrote:

Hi Jeffrey,

> The offending host is 59.64.129.175. To err on the side of caution we
> attempted to block the entire netblock. According to whois data,
> that's 59.64.128.0-59.64.159.255.
> 
>     iptables -A INPUT -s 59.64.128.0/19 -p TCP -j DROP
> 
> After reboot cpu usage is still high and access_log still shows
> useless requests from the host:

Did you actually arrange for your iptables rule to be reinstated at boot?

If you just configure a rule as above, but don't save it, it will
disappear ar reboot.

Regards,
Anand
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