Hello,can somebody tell me in a few words what is the diffrence between CBAC and established !From my point of view is practicaly the same thing. Why should I use one and not the other ?Thank U!

Hello,I have a cisco router 1721, IOS 12.4(25a)I enabled dhcp server for my local LAN, and I setup my WAN interface as dhcp interface.My ISP told me that my router is acting as dhcp server on WAN interface...and is not good for them. Can I stop my ci...