# about  NLANR

**URL:** <https://community.zeek.org/t/about-nlanr/368>\
**Category:** Zeek\
**Created:** [May 26, 2003, 11:14am UTC](https://community.zeek.org/t/about-nlanr/368 "2003-05-26T11:14:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Shaofu\_Wang](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@Shaofu\_Wang](https://community.zeek.org/u/Shaofu_Wang)\
**Post date:** [May 26, 2003, 11:14am UTC](https://community.zeek.org/t/about-nlanr/368/1 "2003-05-26T11:14:32Z")

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Hi  
&nbsp;&nbsp;&nbsp;I used the trace file from NLANR to test Bro. But Bro does nothing but report  
bad checksum.  
Sessions.cc: Weird("bad\_IP\_checksum", hdr, pkt);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return;  
TCP.cc: Weird("bad\_TCP\_checksum");  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return;

What should I do , to make trace file available to Bro?

Thanks very much!  
Have a nice day!  
Ciao  
Cloud

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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, 3:36pm UTC](https://community.zeek.org/t/about-nlanr/368/2 "2022-05-06T15:36:45Z")

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