Use VPN for Remote Management

Best practices recommend not opening remote access daemons to the Internet. Attackers can use the remote access daemons for brute-forcing usernames or passwords or exploiting them. Since daemons such as sshd need to run with enhanced privileges to verify the provided user credentials, more risk is involved if they're vulnerable. Therefore, we recommend not allowing wide open remote access and making a VPN connection a fundamental requirement to access such services. OpenVPN is a nice open-source solution that you can easily use to set up VPNs, and it can even be used on different operating systems. Linux is also capable of implementing IPsec, a RFC-standardized VPN solution, through FreeS/WAN and Openswan.

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