/ Do Nova Broadband block any ports?

For security reasons, the following ports are blocked by default:

Ports 135-139 and port 445
Windows File Sharing, blocked to prevent malware. These ports are blocked for all residential customers and for Supernova business customers. They are not blocked for SLA business customers.

Port 1900 UDP
SSDP/UPnP, blocked to prevent DDoS amplification attacks. Blocked for all customers by default.

If these port blocks present particular problems for any customer, we can unblock them for you on request to support@novabroadband.ie. Please state:

– which port number(s)
– TCP or UDP
– reason for needing the port(s) unblocked

and we will be happy to help.

Posted in: Technical FAQs