I have recently started renting a server from Hetzner..

I get continuous emails telling me that my server is performing scans on other servers: 

"Your server with the above-mentioned IP address has performed scans on other servers on the Internet.

This has placed a considerable strain on network resources and, as a result, a segment of our network has been adversely affected" 

I have run clamscan and rhkit, nothing is found or detected even with updates. 

Do you have any advice on how I can solve this issue? Is there a way of installing a firewall??? 

Nmap shows:

```
PORT      STATE SERVICE
22/tcp    open  ssh
80/tcp    open  http
31337/tcp open  Elite

```