NEW TO IDS

[kbashir () engro com (kbashir () engro com)]

     I wanted to find out a couple of things.
     
     
     1) does ids monitor ip traffic or they do monitor ipx and sna traffic 
     for loopholes  too.
     
     2) basically i want to find how to monitor internet traffic with ids. 
     is the below solution good or bad.
     
     i know i can integrate the firewall logs with the ids in market but if 
     you have a firewall which doesnt have this capability how can u do 
     this.
     
     one solution is to put ids between internet router and firewall, i 
     know it will monitor a lot of traffic amd might generate false alarm 
     but is it the only possible way.
     
     kb