Is port 53 (DNS) dangerous?

Port 53 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 53 be open on my firewall?

Port 53 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 53 use?

Port 53 (DNS) uses the TCP/UDP transport protocol and falls under the DNS category.

:53 (TCP/UDP)

DNS

Low Risiko

TCP/UDP — DNS

On this page

Ikhtisar Port

Nomor Port 53

Nama Layanan DNS

Protokol Transport TCP/UDP

Kategori DNS

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 53?

Domain Name System. Translates human-readable domain names (e.g., example.com) into IP addresses. TCP is used for zone transfers and large responses; UDP for standard queries.

TCP/UDP DNS Umum Digunakan

Pertimbangan Keamanan

Port 53 (DNS) 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.

DNS

Ikhtisar Port

Apa itu Port 53?

Pertimbangan Keamanan

Protokol Terkait

Port Terkait — DNS

Istilah Terkait