Symptoms

WebUI display is empty.

Impact

Unable to see the rule in webUI.

Conditions

When the configured rule has high ASCII (greater than 127) value.

Workaround

Use the following steps: 1. Navigate to Security > Options > Application Security > Attack Signatures. 2. Create a new signature in Advanced Edit Mode. After setting, confirm the setting value with the developer tool. 3. Add it to the signature set (backed by actual signature detection confirmation). 4. Remove the old signatures from signature set.

Fix Information

None

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips