Is port 137 (NetBIOS Name) dangerous?

Port 137 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 137 be open on my firewall?

Port 137 should only be open with strict firewall rules whitelisting trusted IP addresses. Enable rate limiting and intrusion detection systems.

What transport protocol does port 137 use?

Port 137 (NetBIOS Name) uses the UDP transport protocol and falls under the System & Infrastructure category.

:137 (UDP)

NetBIOS Name

High Risiko

UDP — System & Infrastructure

Ikhtisar Port

Nomor Port 137

Nama Layanan NetBIOS Name

Protokol Transport UDP

Kategori System & Infrastructure

Risiko Keamanan High

Rentang Port Well-Known (0-1023)

Apa itu Port 137?

NetBIOS Name Service. Resolves NetBIOS names to IP addresses on local networks. Part of the legacy Windows networking stack and a frequent attack vector.

UDP System & Infrastructure Umum Digunakan

Pertimbangan Keamanan

Port 137 (NetBIOS Name) 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 — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Istilah Terkait

Bandwidth Latency Packet Loss Ping Throughput ASN