Anyone know of an old fashioned Ethernet hub?

Hi All,

I need to do some network monitoring with Wireshark.
(modbus/tcp).

I need an old fashioned hub (not a switch) to
put between an appliance and a pump so I can see
what is actually happening.

Problem: all I can find are switches. Those
don't work with Wireshark.

Anyone know of a real hub out there. Only need three
ports, but am not picky about more than that.

Prefer 100 Base-T, but can live with 10-base-T

Many thanks,
-T

On 10/3/2014 6:48 PM, Todd wrote:
Hi All,

I need to do some network monitoring with Wireshark.
(modbus/tcp).

I need an old fashioned hub (not a switch) to
put between an appliance and a pump so I can see
what is actually happening.

Problem: all I can find are switches. Those
don't work with Wireshark.

Anyone know of a real hub out there. Only need three
ports, but am not picky about more than that.

Prefer 100 Base-T, but can live with 10-base-T

Many thanks,
-T

Have you tried e-bay?

http://www.ebay.com/itm/like/1614389...torid=229 466

On Fri, 03 Oct 2014 15:48:44 -0700, Todd wrote:

Hi All,

I need to do some network monitoring with Wireshark.
(modbus/tcp).

I need an old fashioned hub (not a switch) to
put between an appliance and a pump so I can see
what is actually happening.

Problem: all I can find are switches. Those
don't work with Wireshark.

Anyone know of a real hub out there. Only need three
ports, but am not picky about more than that.

Prefer 100 Base-T, but can live with 10-base-T

Many thanks,
-T

try fry's electronic phoenix arizona.
they have a huge collection of numerous parts.

Todd submitted this idea :
Hi All,

I need to do some network monitoring with Wireshark.
(modbus/tcp).

I need an old fashioned hub (not a switch) to
put between an appliance and a pump so I can see
what is actually happening.

Problem: all I can find are switches. Those
don't work with Wireshark.

Anyone know of a real hub out there. Only need three
ports, but am not picky about more than that.

Prefer 100 Base-T, but can live with 10-base-T

A managed switch with port mirroring would also work. You can program
the switch so that any traffic going to a specific port is mirrored to
another port for monitoring.

On 10/03/2014 05:48 PM, Todd wrote:
Hi All,

I need to do some network monitoring with Wireshark.
(modbus/tcp).

I need an old fashioned hub (not a switch) to
put between an appliance and a pump so I can see
what is actually happening.

Problem: all I can find are switches. Those
don't work with Wireshark.

Anyone know of a real hub out there. Only need three
ports, but am not picky about more than that.

Prefer 100 Base-T, but can live with 10-base-T

Many thanks,
-T


I'm cleaning out my attic.
If you are in the US I'll send you one if you pay postage.

my gmail addy is philo565

On 10/03/2014 07:19 PM, philo wrote:
On 10/03/2014 05:48 PM, Todd wrote:
Hi All,

I need to do some network monitoring with Wireshark.
(modbus/tcp).

I need an old fashioned hub (not a switch) to
put between an appliance and a pump so I can see
what is actually happening.

Problem: all I can find are switches. Those
don't work with Wireshark.

Anyone know of a real hub out there. Only need three
ports, but am not picky about more than that.

Prefer 100 Base-T, but can live with 10-base-T

Many thanks,
-T


I'm cleaning out my attic.
If you are in the US I'll send you one if you pay postage.

my gmail addy is philo565

Thank you. I just though of a place with some cob web I
might look too. I will get back.

Todd wrote:

I need an old fashioned hub (not a switch) to put between an
appliance and a pump so I can see what is actually happening.

You can mess about with dual-speed hubs, which act like a 10Mb hub and a
100Mb hub connected via a two port switch, all in one device, but
they're getting a bit long in the tooth

Better to use a switch with monitoring facilities, some small ones
without four digit price tag, probably suitable for your needs ...

http://www.cyberdata.net/products/re...-pm/index.html

http://www.netoptics.com/products/ne...taps/teeny-tap

http://www.dual-comm.com/gigabit_por...LAN_switch.htm

On 10/03/2014 09:14 PM, Andy Burns wrote:
Todd wrote:

I need an old fashioned hub (not a switch) to put between an
appliance and a pump so I can see what is actually happening.

You can mess about with dual-speed hubs, which act like a 10Mb hub and a
100Mb hub connected via a two port switch, all in one device, but
they're getting a bit long in the tooth

Better to use a switch with monitoring facilities, some small ones
without four digit price tag, probably suitable for your needs ...

http://www.cyberdata.net/products/re...-pm/index.html


http://www.netoptics.com/products/ne...taps/teeny-tap

http://www.dual-comm.com/gigabit_por...LAN_switch.htm


Oh wow! I have been Googling my arse off looking for something
like that. Thank you!

On Fri, 03 Oct 2014 15:48:44 -0700, Todd wrote:

Hi All,

I need to do some network monitoring with Wireshark.
(modbus/tcp).

I need an old fashioned hub (not a switch) to
put between an appliance and a pump so I can see
what is actually happening.

If you have a PC all you need to do is add another Ethernet
card and make yourself the gateway between the pump/appliance.

appliance --- ether1 --- PC/Wireshark -- ether2 --- pump

Second Ethernet card could be USB if you have a laptop.
[]'s
--
Don't be evil - Google 2004
We have a new policy - Google 2012

Todd wrote:

Shadow wrote:

appliance --- ether1 --- PC/Wireshark -- ether2 --- pump

Very sneaky! And a lot of custom motherboards come with
dual Ethernet these days too.
Can you have both on the same network (192.168.xxx.0/24)?

Not if you want to route traffic though the PC, you could OTOH set it up
as a bridge, I presume you can still wireshark either the bridge device
itself, or the two individual NICs.