Cisco does offer an "IPS on a stick" feature and is what the OP is talking about. Its called Inline VLAN Pairs and is documented here (line wraps): http://www.cisco.com/univercd/cc/td/doc/product/iaabu/csids/csids13/clig uide/cliinter.htm#wp1047718
Basically: 1) You create another vlan on the switch (for a total of 2). 2) You convert one of the ports to a trunk port and plug the IPS monitoring port into it. 3) You then take all the access ports and assign them to one VLAN and the port connected to the gateway to the other vlan. 4) You create a vlan pair in the IPS software to bind the 2 vlans together. -John -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andrew Plato Sent: Thursday, February 08, 2007 11:38 AM To: [EMAIL PROTECTED]; [email protected] Subject: RE: IPS and Trunking If you create a mirror port and plug in any IPS/IDS, it will see the traffic. TippingPoint, ISS, etc. All can do that. Also, pretty much any decent managed switch can have mirror ports. This is not unique to Cisco. Keep in mind, you cannot do real-time IPS (intrusion prevention) in any reliable manner this way. You have to be IN-LINE to do real-time blocking and filtering. Passive monitoring off a mirror port only allows you to send RSTs to stop stuff, and that is not a very reliable way to block bad stuff. ___________________________________ Andrew Plato, CISSP, CISM President/Principal Consultant Anitian Enterprise Security -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Monday, February 05, 2007 10:44 AM To: [email protected] Subject: IPS and Trunking Cisco has a great feature where I can configure all traffic on a switch to go to a trunk port, plug in the IPS/IDS to the trunk port and see all traffic. Can other vendors, such as Sourcefire, TippingPoint, ISS do this? Thanks, ------------------------------------------------------------------------ Test Your IDS Is your IDS deployed correctly? Find out quickly and easily by testing it with real-world attacks from CORE IMPACT. Go to http://www.coresecurity.com/index.php5?module=Form&action=impact&campaig n=intro_sfw to learn more. ------------------------------------------------------------------------ ------------------------------------------------------------------------ Test Your IDS Is your IDS deployed correctly? Find out quickly and easily by testing it with real-world attacks from CORE IMPACT. Go to http://www.coresecurity.com/index.php5?module=Form&action=impact&campaig n=intro_sfw to learn more. ------------------------------------------------------------------------ ------------------------------------------------------------------------ Test Your IDS Is your IDS deployed correctly? Find out quickly and easily by testing it with real-world attacks from CORE IMPACT. Go to http://www.coresecurity.com/index.php5?module=Form&action=impact&campaign=intro_sfw to learn more. ------------------------------------------------------------------------
