> I got a copy of Bro, vp-bro-0-6-alpha_tar, (I don't know is there a newer
> version now?)
There isn't a newer version yet, though I hope to put out 0.7 within a
month or so.
> So, at
> first, I start drawing it's "Class-relations Scheme", which will describes
> the relations between Bro's classes. Is there any one did it?
I don't know of anyone doing this, and it would certainly be handy to have!
Hello Bro's users,
I got a copy of Bro, vp-bro-0-6-alpha_tar, (I don't know is there a newer
version now?), few weeks ago but till now I have time to read it's source
code. Bro is well structured, and if we make a detailed documentation for
it, Bro will be very nice to users and who wants to develop it. So, at
first, I start drawing it's "Class-relations Scheme", which will describes
the relations between Bro's classes. Is there any one did it? If "yes",
please notice me !
PS: Please, fogive my terrible English !
FYI, a revised version of the Bro paper, which appears in Computer
Networks 31(23-24), Dec. 1999, is now available from:
It has a number of tweaks over the USENIX version, none major, but together
totalling a medium-grade revision.
> I'm using the suggested filter, i.e.:
> ./bro -f "((tcp & 0x7 != 0) or \
> port telnet or tcp port 513 or port finger or port 111 or tcp port 113 or \
> port ftp or dst port 8000 or \
> (tcp and (ip[6:2] & 0x3fff != 0)))" \
> -i hme0 mt
> Looking at the top stats for the system, top gives:
> load averages: 1.00, 1.01, 1.01 00:15:11
> 22 processes: 20 sleeping, 1 running, 1 on cpu
> CPU states: 0.0% idle, 99.8% user, 0.2% kernel, 0.0% iowait, 0.0% swap
> Memory: 256M real, 76M free, 13M swap in use, 424M swap free
> PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
> 3172 root 1 40 0 4216K 3736K run 22.9H 99.51% bro
Very strange. The next thing to do is attach a debugger to it when it's
running and see where it is. But you might also want to try the Bro
which may have already fixed the problem (there were some bugs in which
certain sequences of packets could make Bro loop or crash). This is a
0.7 pre-release and so doesn't include discussion of what has changed,
so not really ready for general use, though others who want to play with
it now can go ahead and fetch it. As usual, please don't redistribute it
further, instead point people at me for further copies.
> I am a student a Harvey Mudd College and I am working with a research
> clinic sponsored by the Aerospace Corporation. I'm currently
> working on configuring Bro alpha 0.6 under Solaris 2.7. When I start
> running it, it appears to be working for a while, but eventually
> (sometime between 25min and about a day) it runs away, takes up the whole
> cpu on an Ultra Sparc 30 with 256 megs of RAM, and never seems to write
> to any of its logs again.
What volume traffic stream are you running it on, and with what tcpdump
filter? The symptoms sound like it is running out of virtual memory and
starting to page-fault thrash.
I am a student a Harvey Mudd College and I am working with a research
clinic sponsored by the Aerospace Corporation. I'm currently
working on configuring Bro alpha 0.6 under Solaris 2.7. When I start
running it, it appears to be working for a while, but eventually
(sometime between 25min and about a day) it runs away, takes up the whole
cpu on an Ultra Sparc 30 with 256 megs of RAM, and never seems to write
to any of its logs again. Please let me know if you can offer any
assistance. Thank you in advance.
Matthew J. Schnaider East 121
Harvey Mudd College x72006
340 E. Foothill Blvd. Class of 2001
Claremont, CA 91711 Computer Science Department Staff
"You'll never shine if you don't glow."