On Sunday, April 19, 2020 at 9:21:44 AM UTC-4, Jeffrey Walton wrote:
>
>
> On Friday, April 17, 2020 at 3:02:13 AM UTC-4, Jeffrey Walton wrote:
>>
>>
>> The Crypto++ website is down.
>>
>> It appears GoDaddy is suspending the VM due to high cpu usage. GoDaddy 
>> writes it is due to Apache.
>>
>> We are not sure what is going on. We have not made any configuration 
>> changes since last summer. The only changes are documentation updates last 
>> week, which is copied new HTML files to a docs/ directory.
>>
>> I suspect something is sideways due to the OOM killer on the VM. OOM 
>> probably killed MySQL service, which wreaked havoc with Apache.
>>
>> At the moment I cannot SSH into the machine.
>>
>
> The VM is available again.
>
> It looks like someone from China is hammering the web server with useless 
> requests, and it is causing a DoS:
>
>     59.64.129.175 - - [19/Apr/2020:08:53:53 -0400] "GET
>     /w/index.php?title=Special:WhatLinksHere&limit=50&
>     printable=yes HTTP/1.1" 301 311
>
> We are trying to block the netblock, but the netfilter rule is not present 
> after rebooting the machine.
>
>     iptables -A INPUT -s 59.64.128.0/19 -p TCP -j DROP
>
> We cannot ifdown/ifup because we lose access the the VM. We have to reboot 
> to machine to effect changes.
>
> We're now trying to figure out what is wrong with netfilter.
>

Also see 
https://groups.google.com/d/msg/cryptopp-users/aDE9ter5mv0/YEi4fKSKAgAJ. 

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