Event ID - 138

Port No138
Service Namenetbios-dgm
RFC Doc0
ProtocolTCP
DescriptionNETBIOS Datagram Service. A principle rqmt for NetBIOS services on MS hosts (Win9x/ME/NT/Win2000). UDP 137 is used for browsing, directory replication, logon sequence, netlogon, pass-thru validation, printing support, trusts, and WinNT Secure Channel. Security Concerns: Key target in auth & DOS attacks. Block at all perimeters; NIC-filter on public-exposed MS hosts
Reference LinkPort Information

Port 138: Netbios-dgm
AttackYes

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