ip filtering and Port filtering

[karana]

ip filtering : - filter ip packets based on protocol { UDP ,TCP } , ports , src ip ,dest ip , packet type .

Port filtering : - filter ip packets based on ports .


Is port filtering just a subset of ip filtering ? what is real differnce between them ?


Thanks,
Karana

[GNU-Fan]

Is port filtering just a subset of ip filtering ?

Yes, it is a special case of the latter.
You choose as the filter criterion the number of the source or destination port.