Is port 587 (SMTP Submission) dangerous?

Port 587 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 587 be open on my firewall?

Port 587 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 587 use?

Port 587 (SMTP Submission) uses the TCP transport protocol and falls under the Email category.

:587 (TCP)

SMTP Submission

Low Risiko

TCP — Email

On this page

Ikhtisar Port

Nomor Port 587

Nama Layanan SMTP Submission

Protokol Transport TCP

Kategori Email

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 587?

Mail Message Submission (MSA). The recommended port for email clients to submit outgoing mail using STARTTLS encryption. Preferred over port 25 for client mail submission.

TCP Email Umum Digunakan

Pertimbangan Keamanan

Port 587 (SMTP Submission) 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.

SMTP Submission

Ikhtisar Port

Apa itu Port 587?

Pertimbangan Keamanan

Port Terkait — Email

Istilah Terkait