Hello,

I’m actually using flow-tools to generate reports in order to create a list of the most frequent used ip addresses and destination ports for udp and tcp protocols.

My problem is that I obtain strange values for the first-flow and last-flow key words.

For example :

# first-flow : 4294967295 Wed Dec 31 17:59:29 1969

# last-flow : 0 Wed Dec 31 18:00:00 1969

 

As you can see packets are captured before epoch !!!!

 

When I use flow-print the obtained values seem to be correct:

With the –f 1 option, for example I have :

 

0001a 129.15.118.219  0000 129.15.119.255    11 277 277 1 145 0511.13:14:29.000 0511.13:14:29.000     0.000 145 00 00

 

With the header :

 

Sif SrcIPaddress Dif DstIPaddress Pr ScrcP DstP Pkts Octects StartTime EndTime Active B/Pk Ts Fl

 

The name of my ft file is : ft-v05.2005-05-11.13.1000-0500

 

Do you know why I have these strange values?

 

Thanks for your help.

 

Sylvain VIAL.

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