VBrick Systems VB5000 manual Maintenance Usernames & Passwords Change SNMPv3 Passwords, User Level

			Maintenance
Table 5. Default User Names and Passwords
User Level	Default User Name	Default Password	Authority
Administrator	admin	admin	Read, diagnostics, edit, change password,
			network and routing.
Operator	operator	operator	Read, diagnostics, edit.
Diagnostics	diagnostics	diagnostics	Read, diagnostics.
Public	public	public	Read

Maintenance: Usernames & Passwords > Change SNMPv3 Passwords

SNMPv3 provides additional security that exceeds that available with SNMPv2. SNMPv3 authentication provides the ability to validate the transaction between host and client and hides the traffic with secure (DES) encryption. It also provides a user-based security model rather than a community-based model. VBrick's implementation allows you to use both v1/ v2 and v3. For the highest security, disable SNMP v1/v2 (see Configuration: System > Security on page 49).

VBrick MPEG-2 Appliance Admin Guide 93