<P> In order to start sessions or distribute datagrams, an application must register its NetBIOS name using the name service . NetBIOS names are 16 octets in length and vary based on the particular implementation . Frequently, the 16th octet, called the NetBIOS Suffix, designates the type of resource, and can be used to tell other applications what type of services the system offers . In NBT, the name service operates on UDP port 137 (TCP port 137 can also be used, but rarely is). </P> <P> The name service primitives offered by NetBIOS are: </P> <Ul> <Li> Add name--registers a NetBIOS name . </Li> <Li> Add group name--registers a NetBIOS "group" name . </Li> <Li> Delete name--un-registers a NetBIOS name or group name . </Li> <Li> Find name--looks up a NetBIOS name on the network . </Li> </Ul> <Li> Add name--registers a NetBIOS name . </Li>

What are netbios netbeui and kerberos in networking