How many bytes long is the NetBIOS name?

NetBIOS names consist of up to 15 bytes of OEM characters including letters, digits, hyphens, and periods. Some characters are specific to the character set. NetBIOS names are typically represented in the OEM character set.

What is the maximum characters for username in Active Directory?

Resolution. The maximum number of characters supported in Active Directory (AD) for user logon name is 20.

Is NetBIOS needed?

NetBIOS is needed to join a domain and there are quite a few legacy apps that were designed around it and therefor need NetBIOS to function properly.

What is a samAccountName?

The sAMAccountName attribute is a logon name used to support clients and servers from previous version of Windows, such as Windows NT 4.0, Windows 95, Windows 98, and LAN Manager. The logon name must be 20 or fewer characters and be unique among all security principal objects within the domain.

Is it safe to disable NetBIOS?

There are many security concerns with NetBIOS; and disabling its support on your network and devices is strongly recommended. Disabling the use and support of NetBIOS can help to mitigate an attacker’s ability to: poison and spoof responses, obtain a user’s hashed credentials, inspect web traffic, etc.

What is the maximum length of a NetBIOS name?

The 15 character maximum referred to is the maximum length of the NetBIOS name of a computer. The sAMAccountName will be the NetBIOS name with a trailing “$” character, so the maximun sAMAccountName is 16 characters. The common name (the value of the cn attribute) can be up to 64 characters.

Is the NetBIOS limt of 15 CharActors still a factor?

You should stick with 15 characters. Microsoft still recommends 15 even though they support more. There’s just no point in rolling something out and finding out after the fact that you have a glitch somewhere because some app doesn’t handle big names. Thanks for contributing an answer to Server Fault!

What are the reserved characters in NetBIOS name syntax?

For more information about the NetBIOS name syntax, see NetBIOS name syntax. The 16th character is reserved to identify the functionality that is installed on the registered network device. See Table of reserved words. Special characters: Period (.)

What is the maximum length of a computer name in Windows?