# wrong size computation

**URL:** <https://community.zeek.org/t/wrong-size-computation/901>\
**Category:** Zeek\
**Created:** [November 29, 2005, 8:53am UTC](https://community.zeek.org/t/wrong-size-computation/901 "2005-11-29T08:53:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Vern](https://yyz1.discourse-cdn.com/flex011/user_avatar/community.zeek.org/vern/32/630_2.png) [@Vern](https://community.zeek.org/u/Vern)\
**Post date:** [November 29, 2005, 8:53am UTC](https://community.zeek.org/t/wrong-size-computation/901/1 "2005-11-29T08:53:38Z")

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> there's a Bro script (Vern?) to sample packets very  
> efficiently to estimate connection size, even in the case the sequence  
> numbers wrap around a number of times, which then can be used to  
> validate the connection size

Yes, large-conn.bro, written by Chema Gonzalez, and first appearing in Bro  
0.9a8. Note that it's only useful for quite large connections, since it's  
based on a form of (non-random) sampling.

&nbsp;&nbsp;&nbsp;&nbsp;Vern

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**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/zeek/original/1X/f09d732bc2cc7c7cc7e35db67cf4e1d5233ce7a7.png) [@system](https://community.zeek.org/u/system)\
**Post date:** [May 6, 2022, 3:37pm UTC](https://community.zeek.org/t/wrong-size-computation/901/2 "2022-05-06T15:37:45Z")

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