Packet Classifiers and Filters

Hai,

I would like to get info on IP Packet classification and filtering, can 
anybody help?

 Thanx,
 
 -srini

#  
# S Srinivasan (Research Engineer)
# ATM Group
# 4th floor
# Sneha Complex
# Centre for Development of Telematics
# 71/1 MillerRoad, Bangalore 560052, INDIA
# E-mail : s_srini(_at_)cdotb(_dot_)ernet(_dot_)in
# Phone  : +91-80-2263399 ext 279/364/343
#