Is port 9 (Discard) dangerous?

Port 9 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 9 be open on my firewall?

Port 9 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 9 use?

Port 9 (Discard) uses the TCP/UDP transport protocol and falls under the System & Infrastructure category.

:9 (TCP/UDP)

Discard

Low Risiko

TCP/UDP — System & Infrastructure

On this page

Ikhtisar Port

Nomor Port 9

Nama Layanan Discard

Protokol Transport TCP/UDP

Kategori System & Infrastructure

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 9?

Discard protocol. Silently discards all received data without sending any response. Also used for Wake-on-LAN (WoL) magic packets over UDP.

TCP/UDP System & Infrastructure Umum Digunakan

Pertimbangan Keamanan

Port 9 (Discard) 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.

Discard

Ikhtisar Port

Apa itu Port 9?

Pertimbangan Keamanan

Port Terkait — System & Infrastructure

Istilah Terkait