Is port 543 (Kerberos Login) dangerous?

Port 543 is classified as high risk. It is a common target for automated scanning and brute-force attacks. Restrict access to trusted IPs if exposure is necessary.

Should port 543 be open on my firewall?

Port 543 should only be open with strict firewall rules whitelisting trusted IP addresses. Enable rate limiting and intrusion detection systems.

What transport protocol does port 543 use?

Port 543 (Kerberos Login) uses the TCP transport protocol and falls under the Remote Access category.

:543 (TCP)

Kerberos Login

High Risiko

TCP — Remote Access

On this page

Ikhtisar Port

Nomor Port 543

Nama Layanan Kerberos Login

Protokol Transport TCP

Kategori Remote Access

Risiko Keamanan High

Rentang Port Well-Known (0-1023)

Apa itu Port 543?

Port 543 is assigned to klogin, the Kerberos-authenticated rlogin service. Superseded by Kerberos-authenticated SSH.

TCP Remote Access

Pertimbangan Keamanan

Port 543 (Kerberos Login) diklasifikasikan sebagai risiko tinggi. Port ini adalah target umum untuk pemindaian otomatis dan serangan brute-force. Jika harus diekspos, batasi akses ke alamat IP yang diketahui.

Rekomendasi: Gunakan aturan firewall untuk memasukkan IP tepercaya ke whitelist. Aktifkan pembatasan kecepatan dan deteksi intrusi.

Kerberos Login

Ikhtisar Port

Apa itu Port 543?

Pertimbangan Keamanan

Port Terkait — Remote Access

Istilah Terkait