Qǐng quèrèn fánghuǒqiáng méiyǒu zǔzhǐ gāi duānkǒu de tōngxìn.
Please confirm that the firewall is not blocking communication on that port.
Tips
usage
In networking, 端口 refers to a logical communication endpoint (e.g., port 443 for HTTPS). It can also refer to a physical port on hardware (e.g., USB port = USB端口). Not to be confused with 港口 (harbor/seaport).