signature match

I have read the whole Bro Reference Manual and others in The bro is running normally when using policy. I know how to write a signature, but these signatures had never been matched. I have used the local.lite.bro to activate Signature Engine, and the signature.log is nothing even using the simplest signature. I didn’t find the reason.
Someone can help me!


Does this blog posting help?

     The ICSI Networking Group Blog: Bro's Signature Engine