Is port 853 (DNS over TLS) dangerous?

Port 853 is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose with standard security practices.

Should port 853 be open on my firewall?

Port 853 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 853 use?

Port 853 (DNS over TLS) uses the TCP transport protocol and falls under the DNS category.

:853 (TCP)

DNS over TLS

Low Risiko

TCP — DNS

Ikhtisar Port

Nomor Port 853

Nama Layanan DNS over TLS

Protokol Transport TCP

Kategori DNS

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 853?

DNS over TLS (DoT). Encrypts DNS queries between client and recursive resolver using TLS, preventing eavesdropping and manipulation of DNS traffic.

TCP DNS Umum Digunakan

Pertimbangan Keamanan

Port 853 (DNS over TLS) diklasifikasikan sebagai risiko rendah. Layanan ini menggunakan enkripsi atau memiliki permukaan serangan yang minimal, sehingga relatif aman untuk diekspos.

Rekomendasi: Terapkan praktik keamanan standar. Jaga perangkat lunak tetap diperbarui dan pantau akses.

Port Terkait — DNS

42 WINS / nameserver 53 DNS 101 NIC Host Name 202 AT-NBP 206 AT-ZIS 558 SDNSKMP 634 GINAD 953 RNDC

Istilah Terkait

A Record AAAA Record Authoritative DNS Server CNAME Record DNS DNS Resolver