Snort mailing list archives
Re: Snort Sensor Placement Outside Firewall
From: Erek Adams <erek () snort org>
Date: Wed, 25 Jun 2003 11:48:01 -0400 (EDT)
On Wed, 25 Jun 2003, Rich Lichvar wrote:
I know this is a bit off-topic, but I need some advice/help and would like to tap the experience of those who probably have successfully done what we are thinking of doing. We are thinking of putting a Snort-based sensor outside our firewall in the Untrusted zone. (This is after the border/edge/gateway router which is controlled by our hosting facility and not us.) I was wondering if any of you had any advice about: 1. OS: Linux? Hardened how? What system capacity (RAM, hard drive) might be required?
OS: Pick your OS. Pick one that you know and know well. You can't waste time learning about an OS with an IDS. Hardened: Pick your hardening guide. Cut off all services. Use SSH for management or a serial connection if you're really paraniod. Capacity: As much as you can. Throw as much money at it as you can. Fast HD to save data with plenty of busspeed. v2.0 uses more memory than previous versions, so use as much as you can.
2. Cabling setup: Internet Cat 5 cable to hub and cable from hub to sensor and cable from hub to Untrusted port of firewall? (I've tried this in the past and had problems with traffic even getting to the firewall. Maybe a crossover cable is needed?)
No crossover needed. Just a 'normal' cable. If you want to be 'extra' safe, you might want to use a read only cable [0] Cheers! ----- Erek Adams "When things get weird, the weird turn pro." H.S. Thompson [0] http://www.theadamsfamily.net/~erek/snort/ro_cable_and_hubs.txt ------------------------------------------------------- This SF.Net email is sponsored by: INetU Attention Web Developers & Consultants: Become An INetU Hosting Partner. Refer Dedicated Servers. We Manage Them. You Get 10% Monthly Commission! INetU Dedicated Managed Hosting http://www.inetu.net/partner/index.php _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Snort Sensor Placement Outside Firewall Rich Lichvar (Jun 25)
- Re: Snort Sensor Placement Outside Firewall Erek Adams (Jun 25)
- RE: Snort Sensor Placement Outside Firewall Michael Steele (Jun 25)
- RE: Snort Sensor Placement Outside Firewall Erek Adams (Jun 26)
- RE: Snort Sensor Placement Outside Firewall Michael Steele (Jun 25)
- Re: Snort Sensor Placement Outside Firewall David Alonso De La Vega Tapage (Jun 25)
- RE: Snort Sensor Placement Outside Firewall Michael Steele (Jun 25)
- Re: Snort Sensor Placement Outside Firewall David Alonso De La Vega Tapage (Jun 26)
- RE: Snort Sensor Placement Outside Firewall Michael Steele (Jun 25)
- <Possible follow-ups>
- Fw: Snort Sensor Placement Outside Firewall Tom Sevy (Jun 26)
- RE: Snort Sensor Placement Outside Firewall Michael Steele (Jun 26)
- Re: Snort Sensor Placement Outside Firewall Erek Adams (Jun 25)