You can enable Denial-of-service (DoS) protection to prevent malicious attacks. You can find Firewall if you go to Control Panel – Security – Firewall Only services you specify as allowed will be accessible over the internet. If you expose your NAS to the internet, it is advisable to enable the firewall so that you are protected from the internet as well. You will find this setting if you open the Control panel, go to the Network and DSM settings. When the traffic is HTTPS based communication is encrypted so it is not visible to prying eyes. We need to that so that we prevent hackers from snooping for the passwords when we log in. The next step is to Automatically redirect HTTP connections to HTTPS. The best practice is to change DSM ports for HTTP and HTTPS access.
When you setup Synology NAS for the first time, it will start in HTTP mode. Should you follow it, you will minimize security issues to the minimum. In order to help you secure your Synology NAS, I created this tutorial.
For example, if the user that configured it, used bad security practice from the start, like using a commonly used password. But sometimes, Synology NAS can fall victim to bad security practice. In some cases there is malware targeting Synology devices, in some cases, Cryptolocker can infect files shared on the Synology NAS. But, since Synology NAS is also software-based, it is vulnerable to various exploits.
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