Is port 3268 (Microsoft Global Catalog) dangerous?

Port 3268 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 3268 be open on my firewall?

Port 3268 should only be open with strict firewall rules whitelisting trusted IP addresses. Enable rate limiting and intrusion detection systems.

What transport protocol does port 3268 use?

Port 3268 (Microsoft Global Catalog) uses the TCP transport protocol and falls under the System & Infrastructure category.

:3268 (TCP)

Microsoft Global Catalog

High Risiko

TCP — System & Infrastructure

Ikhtisar Port

Nomor Port 3268

Nama Layanan Microsoft Global Catalog

Protokol Transport TCP

Kategori System & Infrastructure

Risiko Keamanan High

Rentang Port Terdaftar (1024-49151)

Apa itu Port 3268?

Port 3268 is used by Microsoft Active Directory for the Global Catalog service, which provides a partial replica of all objects in the directory forest. LDAP clients query the Global Catalog to locate objects across multiple domains. This port is essential for cross-domain authentication in Windows enterprise environments.

TCP System & Infrastructure Umum Digunakan

Pertimbangan Keamanan

Port 3268 (Microsoft Global Catalog) 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