[NCLUG] tcptrack -- useful tool of the day

[Onyx]

Very cool!  Thanks Bob!

- Onyx

Bob Proulx wrote:
> I found a useful tool today.  It is called tcptrack.  Not having run
> into this particular tool before I thought I would share and pass it
> along.
> 
>   sudo apt-get install tcptrack
>   sudo tcptrack -i eth0
> 
> This is a really cool utility!  It gives a top-like listing of the
> currently active connections with bandwidth utilization and other
> useful stuff.  I found it very informative.  This is definitely going
> to be a popular tool in my toolbox.
> 
> Check it out!
> 
> Bob
> 
>  15.235.211.254:18535  216.17.153.58:22      ESTABLISHED  0s     240 KB/s
>  24.8.177.121:36465    216.17.153.58:80      RESET        2s     0 B/s
>  216.17.153.62:32770   192.25.206.18:22      ESTABLISHED  14s    0 B/s
>  216.17.153.62:37993   208.245.212.98:5223   ESTABLISHED  16s    0 B/s
> 
>   man tcptrack
> 
>        tcptrack displays the status of TCP connections that it sees on
>        a given network interface. tcptrack monitors their state and
>        displays information such as state, source/destination
>        addresses and bandwidth usage in a sorted, updated list very
>        much like the top(1) command.
> 
>        The filter expression is a standard pcap filter expression
>        (identical to the expressions used by tcpdump(8)) which can be
>        used to filter down the characteristics of TCP connections that
>        tcptrack will see. See tcpdump(8) for more information about
>        the syntax of this expression.
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