Hello All , google foo isn't pulling up anything but drivel about ip aggregation in cisco and describing the word 'fuzz' . I am looking for a tool such as 'aggregate' , this one is written in c . Which has been a very good tool to me . I use this tool to aggregate ip addresses snagged out of various logs to insert into iptables filtering . Again the afore mentioned tool has work well . But now I am seeing a new trick fro some entities that are transmitting from every other ipv4 address such as (*) below . And the trust (& crusty) ol'tool just doesn't allow for a bitt of fuzz in its aggregation filter . Hoping someone knows of such a tool and or may have patched the aggregate tool to accopmlish such a task . (*) ... 63.81.88.116/32 63.81.88.118/32 63.81.88.120/32 63.81.88.122/32 63.81.88.124/32 63.81.88.126/32 ... Tia , JimL -- +---------------------------------------------------------------------+ | James W. Laferriere | System Techniques | Give me VMS | | Network & System Engineer | 3237 Holden Road | Give me Linux | | jiml@system-techniques.com | Fairbanks, AK. 99709 | only on AXP | +---------------------------------------------------------------------+