HP ProCurve NAC 800 User Manual page 254

End-user Access
End-user Access Windows
If the end-users do not enter the correct information in the login window fields, a
login failure window appears:
Figure 5-36. End-user Login Failed
TIP:
5-46
You can customize the logo and contact paragraph that appear on this
window. See "Customizing Error Messages" on page 5-52 for more details.