[Snort-users] Can anyone recommend an ethernet tap?

Eric Hines eric.hines at ...8860...
Wed Oct 6 06:32:12 EDT 2004


I would check out NetOptics. They offer a 10/100 Port Aggregator Ethernet
Tap which means that both the A and B traffic ports are aggregated in to a
single sniffing port so you don't end up wasting 2 NICs on the IDS or having
to deal with bonding the 2 interfaces for Snort to see both sides of the
traffic. You can get more information on this Tap and more at:


Best Regards,

Eric Hines, GCIA, CISSP
Applied Watch Technologies, Inc.
Direct: (877) 262-7593 x327
1134 N. Main St.
Algonquin, IL 60102 

-----Original Message-----
From: Martin Olsson [mailto:elof at ...6680...] 
Sent: Wednesday, October 06, 2004 5:25 AM
To: snort-users mailinglist
Subject: [Snort-users] Can anyone recommend an ethernet tap?

I want to buy an ethernet tap where snort will listen.


* 100Mbps
* full duplex (not a hub then)
* the throughput between A and B should be almost the same as using a
  X-patch cable
* the sniffer port should see both directions of the traffic (if A and B
  generate more than 100Mbps together, start dropping packets), I do not
  want two sniffer ports where one see A->B and the other B->A, I just
  want one port that mirror B<->B

Maybe the sniffer-port could be 1Gbps, then packets wouldn't have to be
dropped, but I guess that the price of a gigabit tap is far more than a
100Mbps one...

I do not want to use a hub.
I do not want to use a switch with port mirroring support.

What product(s) should I look for? Not too expensive please. :-)


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