Is port 4840 (OPC UA) dangerous?

Port 4840 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 4840 be open on my firewall?

Port 4840 should only be open with strict firewall rules whitelisting trusted IP addresses. Enable rate limiting and intrusion detection systems.

What transport protocol does port 4840 use?

Port 4840 (OPC UA) uses the TCP transport protocol and falls under the Other category.

:4840 (TCP)

OPC UA

High Risiko

TCP — Other

Ikhtisar Port

Nomor Port 4840

Nama Layanan OPC UA

Protokol Transport TCP

Kategori Other

Risiko Keamanan High

Rentang Port Terdaftar (1024-49151)

Apa itu Port 4840?

Port 4840 is the default port for OPC UA (OPC Unified Architecture), an industrial communication protocol used in manufacturing automation, SCADA systems, and Industrial IoT. OPC UA provides a platform-independent, secure, and reliable mechanism for data exchange between industrial devices and software. Exposure of this port in ICS/SCADA environments poses serious industrial control system security risks.

TCP Other

Pertimbangan Keamanan

Port 4840 (OPC UA) 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.

Port Terkait — Other

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Istilah Terkait

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