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10 kwi 2020 · The Private DNS setting would appear to be using port 853 rather than port 53. DNS over TLS has its own port, Port 853. DNS over HTTPS uses Port 443, which is the standard port for HTTPS traffic.
24 lip 2016 · I reconfigured my router to stop advertising the IPv6 DNS servers and now the Android 6.0 device is resolving the local hostname using the IPv4 DNS server provided by DHCP (IPv4). I also have a DNAT to redirect all DNS queries (TCP/UDP port 53) to my local DNS server.
12 lut 2015 · If I try to set the port for the DNS Server to 53 I receive an error saying "The port you entered is not valid, try another one (this normally happens because Android doesn't allow a server on that port or another app is using the port)."
25 lip 2022 · When the host address is "8.8.8.8" or "8.8.4.4", the algorithm displays ports 53 and 443 for tcp as open. According to the Internet, this is true, so this case is successful. However, any other IP address returns all ports as closed, with a code of 1.
~# iptables -t nat -I OUTPUT -p udp --dport 53 -j DNAT --to 1.1.1.1:53 DNS servers can also be configured in Settings for Wi-Fi network. Android 9+ supports Private DNS / DNS over TLS (DoT) which sends encrypted DNS queries on port 853 as standardized in RFC7858.
25 wrz 2023 · Why is my phone showing a DNS port as open? Wouldn't that mean someone has spyware on my phone and that they are connecting through port 53? Are you talking about TCP port 53 or UDP port 53? Please clarify your specific problem or provide additional details to highlight exactly what you need.
18 lis 2013 · Default behaviour will be to retry on TCP port 53 for DNS. I want to use this TCP port 53 to bind to in order to provide a DNS server for the project. I can't workaround TCP.
