H3C Technologies H3C Intelligent Management Center - Manual (Page 480)

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6. Click Add.
7. Configure sub rule information:
{
AC—Select an AC. IMC creates sub rules on the AC.
{
Rule Name—Select the name of the signature rule to which the sub rule belongs.
{
Rule ID—Select a sub rule ID in the range of 1 to 27. If the ID you select is already in use on
the device, adding a sub rule will fail.
{
Offset Value—Enter an offset value in the range of 0 to 2364. The offset value determines
from which bits WIPS starts to match a frame.
{
Mask Value—Enter a mask value in the range of 0 to 65535. WIPS uses the mask value and
part of an 802.11 frame to calculate a value. Then it compares the value with the patter value.
If this value is within the value range of the pattern value, the 802.11 frame matches the sub
rule.
{
Match from Payload—Select this parameter to match frames starting from the frame body.
{
Sub Rule Name—A sub rule is not required to have a name. To name a sub rule, select Sub
Rule Name, and enter a string of 1 to 32 characters. It can contain letters, digits, and
underlines. The name must be unique.
{
Pattern Value—Set a pattern value for the sub rule, including the following parameters:
− Match criteria—Options are Greater than, Smaller than, Between, and Equal to.
− Pattern value—This field is required only when the match criterion is Equal to.
− Min. Pattern Value—This field is required only when the match criterion is Between or
Greater than.
− Max. Pattern Value—This field is required only when the match criterion is Between or
Smaller than.
8. Click OK.
Modifying a sub rule
System defined sub rules and sub rules whose signature rules that have been bound to a signature
policy cannot be modified. To modify the latter sub rules, remove the binding first.
To modify a sub rule:
1. Click the Service tab.
2. Select WLAN Manager > WIPS Management > Virtual Security Domain from the navigation tree.
3. Click the Signature Policy tab.
4. Click Signature Rule.
5. Click Sub Rule.
The sub rule list displays all sub rules.
6. Click the Modify icon for the sub rule you want to modify.
The AC, rule name, sub rule ID, and sub rule name cannot be modified. For more information
about how to modify other parameters, see"
Adding a sub rule ."
7. Click OK.
Deleting sub rules
System defined sub rules and sub rules whose signature rules that have been bound to a signature
policy cannot be deleted. To delete the latter sub rules, remove the binding first.