Re: Need to record bandwidth used by branch office VPN tunnels

[Sake Blok <sake () euronet nl>]

On 9 aug 2013, at 03:05, Laura Chappell wrote:

> Consider using tshark (command-line tool) with the following parameters perhaps…
>  
> tshark –q –z io,stat,3000,ip.addr==192.168.1.0/24,ip.addr==192.168.2.0/24,ip.addr==192.168.3.0/24 > mystats.txt
>  
> No packets are saved during this process – you’re only getting statistics.

Laura, this is not entirely true. As tshark uses dumpcap to capture the traffic, dumpcap will save all the packets in a 
temporary file from which tshark will read. To monitor the traffic for  a week in this manner will most likely result 
in a) an out-of-memory error due to the fact that tshark keeps information about each conversation and b) a disk 
filling up with packet data.

Cheers,
Sake


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