problem is :
i am using three gateway system for my network users to access internet,( ISPs are diffrent diffrent ) now suppose if internet stoped working on one gateway then each user ve to change there gateway to other.
i wants to give them internet access where they don't need to change like this ,BUT i don't want to install any hardware for this nither any dedicated new system.
what i was thinking is can I use three dhcp server instead of normal ICS gatewat server.
And is there anyway to trap all user internet activities without proxy ... and if only proxy is there then which is best in which i can get the complete log of user internet activity?