Does oxio block any traffic or ports?

To ensure the security and stability of our network, oxio blocks inbound traffic for two specific protocols: SNMP and SMTP.

🛣️ All other ports and traffic remain fully open and accessible.

What is SNMP (Simple Network Management Protocol?)

SNMP is used to monitor and manage network devices. While useful for internal IT teams, it can pose a significant security risk when left open to the internet.

Why do you block SNMP?

Older versions of SNMP are unencrypted. If left open, cybercriminals could "poll" your devices to gather sensitive information about your home network or even take control of your router.

What’s the benefit of blocking SNMP?

Blocking this inbound traffic prevents external scans from discovering vulnerabilities in your hardware. SNMP also allows us to quickly diagnose outages or degraded services, and is used in the infrastructures of all internet service providers.

What is SMTP (Simple Mail Transfer Protocol?)

SMTP is the standard protocol used for sending emails.

Why do you block SMTP?

We block inbound SMTP to prevent the hosting of private mail servers that may be unsecured. Unprotected mail servers are often hijacked by hackers to send massive amounts of spam or phishing emails (known as "mail relaying").

Will this affect my email?

No. You can still send and receive emails normally through providers like Gmail, Outlook, or iCloud. This block only prevents you from running your own professional-grade email hosting server from home.

By restricting these two specific protocols, we reduce the risk of network intrusion and help prevent the spread of malware and spam across the internet.

Aside from SNMP and SMTP, all other ports are fully functional!

Updated on: 21/01/2026