Fedora Users — Logging denied packets (iptables)

One of our offices has several network ranges blocked in iptables(essentially '-A INPUT -s www.xxx.yyy.zzz/aa -j DROP'). What I'd liketo do is create a log entry each time a packet is dropped, IF it matchesany of those networks. I think I need to assign all of those networksto a "group" and then log dropped packets from that group only. Andwhile I realize this might have other ramifications, such as logsgrowing exponentially, for now we're taking small steps. Later on I canthen look for things like logging the same IP only once...

So how do I tell iptables to create a group or name, or whateverit's called for those ranges, and then log dropped packets from thoseranges only? And to be quite honest, all I really care to see in thelog is something like '[standard log prefix] Packet DROP:$source/$destination' (or $source-port/$destination-port) - I don'treally care for the lengthy log entry that iptables creates, such asthis example of an SSH-reject:

Oct 17 11:15:04 queenb kernel: SSH REJECT: IN=eth0 OUT=MAC=00:30:48:33:96:22:00:07:50:49:df:7a:08:00 SRC=124.198.16.156DST=207.174.xxx.yyy LEN=60 TOS=0x00 PREC=0x00 TTL=44 ID=38666 DFPROTO=TCP SPT=48226 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0