Hetznerden sunucu kiralayıp VPN olarak kullanmaya başlamıştım dün.
Bugün böyle bir mail geldi, sanırım önlem almamı istiyorlar. Ne yapmam lazım?


Dear Mr Furkan Görür,

We have received a notification from the German Federal Office for Information Security (BSI) for (the IP address of) a server you have with us. We are automatically forwarding this notification on to you, for your information.

The original report has been included below. Additional information is provided with the how-to guides referenced in the report. Please note that we do not have any further information to share.

These notifications do not mean your server was involved in any abusive activity. They are simply alerting you to a potential issue on your server, that could be exploited, and that is usually fairly easy to secure.

Kind regards "
______________________
Dear Sir or Madam,

open DNS resolvers are abused for conducting DDoS reflection/
amplification attacks against third parties on a daily basis.

Please find below a list of open DNS resolvers hosted on
your network which can be abused for DDoS reflection/amplification
attacks if no countermeasures have been implemented. The timestamp
indicates when the open resolver was identified.

We would like to ask you to check if the open resolvers identified
on your network are intentionally configured as such and appropriate
countermeasures preventing their abuse for DDoS attacks have been
implemented.

If you have recently solved the issue but received this notification
again, please note the timestamp included below. You should not
receive any further notifications with timestamps after the issue
has been solved.

Additional information on this notification, advice on how to fix
reported issues and answers to frequently asked questions:
<https://reports.cert-bund.de/en/>

This message is digitally signed using PGP.
Information on the signature key is available at:
<https://reports.cert-bund.de/en/digital-signature>

Please note:
This is an automatically generated message. Replies to the
sender address <reports@reports.cert-bund.de> will NOT be read
but silently be discarded. In case of questions, please contact
<certbund@bsi.bund.de> and keep the ticket number [CB-Report#...]
of this message in the subject line.

Affected systems on your network: burada sunucunun IP adresi yazıyor