[Bro] rexmit_inconsistency?

Nicholas Weaver nweaver at ICSI.Berkeley.EDU
Mon Jul 7 08:05:39 PDT 2014

I'm trying to build a test for packet injection, which Bro should complain about as it generates retransmission inconsistencies and/or data after RST or other TCP weirdnesses.

Yet in my simple test trace (attached) and this simple policy script:

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event rexmit_inconsistency(c: connection, t1: string, t2: string){
        print "Inconsistency";
        print t1;
        print t2;

its not flagging.

Is it because the data has already been ACKed and therefore the reassembler is no longer keeping track of the data?

Nicholas Weaver                  it is a tale, told by an idiot,
nweaver at icsi.berkeley.edu                full of sound and fury,
510-666-2903                                 .signifying nothing
PGP: http://www1.icsi.berkeley.edu/~nweaver/data/nweaver_pub.asc

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