Datagram distribution service. Datagram mode is "connectionless"; NetBIOS datagrams are sent over UDP. A datagram is sent with a "Direct Unique" or "Direct Group" packet if it's being sent to a particular NetBIOS name, or a "Broadcast" packet if it's being sent to all NetBIOS names on the network.
NetBIOS - The Wireshark Wiki Network Basic Input/Output System (NetBIOS) NetBIOS is an API providing various networking services. However, the formerly used Ethernet based networking protocol (often called NetBEUI or NBF for NetBEUI Framing) is/was often called NetBIOS too, leading to a lot of confusion. ip access list session allow diskservices any any svc ip access-list session allow-diskservices any any svc-netbios-dgm permit any any svc-netbios-ssn permit any any svc-microsoft-ds permit any any svc-netbios-ns permit ! ip access-list session apprf-guest-sacl ! ip access-list session apprf-ise-posture-sacl ! ip access-list session v6-ap-acl ipv6 any any svc-gre permit ipv6 any any svc-syslog permit ipv6 any user svc-snmp permit Solved: UDP broadcast issue (port 138) c3750 - Cisco Community access-list 138 permit udp any eq netbios-dgm any eq netbios-dgm. this allow net send only from Vlan1 to Vlan2. Martin. 0 Helpful Reply. Latest Contents. How Many Services/Features are use ICMP? Created by Ravi_916 on 03-09-2020 01:19 PM. 0. 0. 0. 0. How Many Services/Features are use ICMP Protocol and for which purposed?
netbios-dgm: Purpose: NETBIOS Datagram Service: Description: UDP NetBIOS datagrams packets are exchanged over this port, usually with Windows machines but also with any other system running Samba (SMB). These UDP NetBIOS datagrams support non-connection oriented file sharing activities. Related Ports: 137, 139, 445
Why Does PrivateFirewall Block Netbios-dgm and Netbios-ns Apr 18, 2010
Datagram distribution service. Datagram mode is "connectionless"; NetBIOS datagrams are sent over UDP. A datagram is sent with a "Direct Unique" or "Direct Group" packet if it's being sent to a particular NetBIOS name, or a "Broadcast" packet if it's being sent to all NetBIOS names on the network.
2 NetBIOS. Background. Provides services related to OSI session layer; NetBIOS is an API, not a networking protocol; Developed in 1983, used for a bunch of things, but now only known as API providing services for SMB.