Is port 465 (SMTPS) dangerous?

Port 465 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 465 be open on my firewall?

Port 465 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 465 use?

Port 465 (SMTPS) uses the TCP transport protocol and falls under the Email category.

:465 (TCP)

SMTPS

Low Risiko

TCP — Email

On this page

Ikhtisar Port

Nomor Port 465

Nama Layanan SMTPS

Protokol Transport TCP

Kategori Email

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 465?

SMTP over SSL/TLS (implicit TLS). Provides encrypted email submission from clients to mail servers. Reintroduced by RFC 8314 as the recommended port for message submission with implicit TLS.

TCP Email Umum Digunakan

Pertimbangan Keamanan

Port 465 (SMTPS) 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.

SMTPS

Ikhtisar Port

Apa itu Port 465?

Pertimbangan Keamanan

Port Terkait — Email

Istilah Terkait