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11.2. CLASSIFY target

The CLASSIFY target can be used to classify packets in such a way that can be used by a couple of different qdiscs (Queue Disciplines). For example, atm, cbq, dsmark, pfifo_fast, htb and the prio qdiscs. For more information about qdiscs and traffic controlling, visit the Linux Advanced Routing and Traffic Control HOW-TO webpage.

The CLASSIFY target is only valid in the POSTROUTING chain of the mangle table.

Table 11-1. CLASSIFY target options

Option--set-class
Exampleiptables -t mangle -A POSTROUTING -p tcp --dport 80 -j CLASSIFY --set-class 20:10
ExplanationThe CLASSIFY target only takes one argument, the --set-class. This tells the target how to class the packet. The class takes 2 values separated by a coma sign, like this MAJOR:MINOR. Once again, if you want more information on this, check the Linux Advanced Routing and Traffic Control HOW-TO webpage.

Note

Works under Linux kernel 2.5 and 2.6.

 
 
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