[flow-tools] some bugs in flow-tools-0.58

Horatio B. Bogbindero wyy@admu.edu.ph
Fri, 14 Jun 2002 14:20:33 +0800


i did some tests on flow-tools-0.58. basically, what i did was compare 
the results of the regular flow-filter, flow-cidr (Inter.netPH) with flow-nfilter.

-flow-tags documentation says tag symbols are in /var/ft/sym/tags (0.57
location) but the file is now /var/ft/sym/tag (0.58 location)
-using the filter-primitive ip-address causes flow-nfilter to core dump
-"match dst-ip-addr" yields the same results as "match src-ip-addr". i
did a quick check on the lib/ftfil.c source but have not traced the problem
yet.
-the time field using:

filter-primitive shift
  type time
  permit gt 1:00
  permit lt 2:00

yields the same result as:

filter-primitive shift
  type time
  permit gt 1:00
  permit lt 23:00

based on my data this should not be the case. the result is the same as if 
there was no time filter at all. i used flow-stat to compare the byte counts.

fyi.


-------------------------------------------
William Emmanuel S. Yu
Ateneo Campus Network Group (AteneoCNG)
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