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I recently scanned my router domain and get this result:

enter image description here

What I get from that report is 3 of 1000 my ports are open. But what to do with "telnet" and "BusyBox telnetd" also "ISC BIND Hostmaster"? Does that port need to open? How to close it? My router has no port filter.

  • This is a question for your router manual. Telnet is odd to have open but port 53 is DNS, and you likely need that, but we cannot be sure unless we know a LOT more about the device and your network. – schroeder Jun 11 '17 at 7:24
  • my router is huawei E5573. this is link of the router screenshot interface. i am searching how to close port 23 but not found for that kind of router. do you know how to close that port manually that work on any router? – Dian92 Jun 12 '17 at 6:39
  • there is no common way to do anything on routers because their UI is not standardised – schroeder Jun 12 '17 at 8:04

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