3Com DUA1550-0AAA02 manual Expected rules for

Problems Related to Setting Up 97

Table 15 Possible Problems With Network Access (continued)

Symptom	Cause	Remedy
The expected rules for	The computer’s MAC address has not been	Follow the steps in “Entering MAC
a computer are not	entered correctly into 3Com Network	Addresses For A Computer” in Chapter 3.
applied.	Access Manager.
An event shown in the	The computer’s MAC address has not been	Follow the steps in “Entering MAC
System event log	entered correctly into 3Com Network	Addresses For A Computer” in Chapter 3.
displays the message:	Access Manager
“Computer-Name =
<unknown>”

Unpredictable RADIUS	The authentication mode enabled on the
authentication of a	network access device may be incompatible
user, group or	with the settings on the Action tab for the
computer.	rule associated with the user, group or
	computer

Ensure the authentication mode selected on the network access device matches how the rule has been setup. Either change the rule setting or else select a different authentication mode on the network access device

A user, group or computer associated with a specific rule cannot gain network access.

Either:

The rule may be set to Deny network access.

Or:

The VLAN ID applied to the rule may not match the VLAN ID in the network access device (switch or wireless access point).

Or:

The user or computer does not have remote access permission enabled.

Or:

The user’s password is not stored using reversible encryption.

Select the Action tab for the rule and check the network access setting.

The network access setting may be set to Deny for a purpose, for example to blacklist a user or group and prevent network access.

Ensure the VLAN ID set for the rule, matches the ID assigned to the VLAN in the network access device. Refer to the user documentation shipped with the network access device for information on determining the VLAN ID assigned in the network access device.

From the Dial-in tab (accessible by right-clicking Users or Groups or Computers in the Tree pane and selecting Properties) under Remote Access Permission, select "Allow access".

From the Account tab (accessible by right-clicking Users or Groups or Computers in the Tree pane and selecting Account) under Account options, enable "Store password using reversible encryption".