Re: Easy way to monitor network traffic?

2010-12-14 Thread Jeffrey Engle

On Dec 14, 2010, at 1:09 PM, Will S wrote:

> What about ? "Little Snitch" Runs in full Demo mode for 3hrs at a time
> for free.
> 

Not what I need. Jeff

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Re: Easy way to monitor network traffic?

2010-12-14 Thread Will S
What about ? "Little Snitch" Runs in full Demo mode for 3hrs at a time
for free.

On Dec 13, 8:20 pm, Jeffrey Engle  wrote:
> I there a way that I can easily monitor my network traffic on my home LAN 
> preferably without using the terminal? with a 3rd party software?
>
> Jeff Engle
> Kamiah, Idaho 83536

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Re: Easy way to monitor network traffic?

2010-12-14 Thread Dan

At 10:12 PM -0800 12/13/2010, Jeffrey Engle wrote:

On Dec 13, 2010, at 10:03 PM, Dan wrote:
 > At 8:20 PM -0800 12/13/2010, Jeffrey Engle wrote:
 I there a way that I can easily monitor my network traffic on my 
home LAN preferably without using the terminal? with a 3rd party 
software?


 Define "monitor"... Do you mean general throughput or packet sniffing?
 To/from your computer or on your entire LAN?


Yes, to/from on the entire LAN...


Ok.  As Clark indicated, there is a segmenting problem.  Unless 
you're using 10 Mb hubs, each client (computer, printer, etc - thing 
plugged into the network) on the LAN sees only the ethernet traffic 
specifically addressed to it (ethernet is pretty smart that way!). 
This is because the switches do intelligent routing, at the physical 
ethernet link level.  Wi-fi is a bit different as there are no 
switches involved - but an interface can only "sniff" packets in a 
single channel.


If your network has a "choke point", you could perhaps monitor 
traffic there.  eg:  At the router that connects to your ISP.  But 
still, because of any ethernet switches you have, that will only let 
you see the traffic to/from your ISP.  Traffic sent directly between 
clients won't be seen as it never goes thru the router.


What is the purpose of all this?  Exactly what do you want to accomplish?

- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.

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Re: Easy way to monitor network traffic?

2010-12-14 Thread Erik Harperink

Op 14-dec-2010, om 5:20 heeft Jeffrey Engle het volgende geschreven:

I there a way that I can easily monitor my network traffic on my  
home LAN preferably without using the terminal? with a 3rd party  
software?


Jeff Engle
Kamiah, Idaho 83536


Hi Jeff,

You can try Wireshark (availble for Windows, Unix and Apple, Darwin).

Erik,
Netherlands, Europe

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Darwin powermacg3series.local 8.10.0 Darwin Kernel Version 8.10.0:  
Wed May 23 16:50:59 PDT 2007; root:xnu-792.21.3~1/RELEASE_PPC Power  
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Re: Easy way to monitor network traffic?

2010-12-14 Thread Dennis Myhand

On 12/13/2010 10:20 PM, Jeffrey Engle wrote:

I there a way that I can easily monitor my network traffic on my home LAN 
preferably without using the terminal? with a 3rd party software?

Jeff Engle
Kamiah, Idaho 83536


Yeah, but the cost is enormous!

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Re: Easy way to monitor network traffic?

2010-12-13 Thread Jeffrey Engle

On Dec 13, 2010, at 10:03 PM, Dan wrote:

> At 8:20 PM -0800 12/13/2010, Jeffrey Engle wrote:
>> I there a way that I can easily monitor my network traffic on my home LAN 
>> preferably without using the terminal? with a 3rd party software?
> 
> Define "monitor"... Do you mean general throughput or packet sniffing?
> To/from your computer or on your entire LAN? 
> 

Yes, to/from on the entire LAN...

Jeff

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Re: Easy way to monitor network traffic?

2010-12-13 Thread Dan

At 8:20 PM -0800 12/13/2010, Jeffrey Engle wrote:
I there a way that I can easily monitor my network traffic on my 
home LAN preferably without using the terminal? with a 3rd party 
software?


Define "monitor"... Do you mean general throughput or packet sniffing?
To/from your computer or on your entire LAN?

- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.

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Re: Easy way to monitor network traffic?

2010-12-13 Thread Clark Martin

On Dec 13, 2010, at 8:20 PM, Jeffrey Engle wrote:

> I there a way that I can easily monitor my network traffic on my home LAN 
> preferably without using the terminal? with a 3rd party software?

Probably not.  If the LAN is via a switch (which includes the one built into 
routers) then you can only see traffic to your machine and broadcast traffic.  
Regular traffic (the packets requesting a web page and the response back from 
the server for example) go only between the router and the machine making the 
request.  

Older 10BaseT-only wiring tended to use hubs which sent all packets out to all 
ports.  With a hub it was possible to monitor all the traffic.

There are some tools to monitor wireless traffic but I'm not familiar with 
those.

Higher end switches allow you to do some monitoring but that's not available in 
typical SOHO equipment.

Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting

"I'm a designated driver on the Information Super Highway"

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