Snort mailing list archives
RE: IP Range Problems
From: "Hutchinson, Andrew" <andrew.hutchinson () Vanderbilt Edu>
Date: Wed, 9 Jul 2003 07:07:12 -0500
Actually, the answer that Ben and I each posted (10.5.0.0/22,10.5.4.0/24) AND the answer that Brian posted were both right. It's just that Ben and I answered what we thought that the posted *meant* to say, while Brian actually answered correctly given what the user *did* say. As Brian pointed out, the notation above covers 2 IP's (10.5.0.0/32 and 10.5.4.255/32) that the user did not include in his range (which was listed as 10.5.0.1-10.5.4.254). I just assumed that the user wanted to look at 5 class B's in their entirety, even though that's not technically what he said. So we're all right, and can all bask in the warm glow of correctness. :-) Andrew Hutchinson - Network Security Vanderbilt University Medical Center (615) 936-2856
-----Original Message----- From: Bryan Irvine [mailto:bryan.irvine () kingcountyjournal com] Sent: Tuesday, July 08, 2003 3:47 PM To: Brian Cc: Nelson, Ben; Ryan Vennell; snort-users () lists sourceforge net Subject: Re: [Snort-users] IP Range Problems uhhh no. Ben had it right. With a subnet mask of /22 that covers 10.5.0.0-10.5.3.255 and then the /24 covers 10.5.4.0-10.5.4.255. There is no point to writing them all out like that, especially with the /32 why add in a NET for a single ip? That is an odd range of ip's though, it doesn't fit in well with CIDR style notation. is this 1 network with a netmask of 255.255.251.0??? strange.... 10.5.0.0/21.5-ish ;-) Out of curiosity are these networks split across multiple interfaces? --Bryan On Tue, 2003-07-08 at 13:03, Brian wrote:On Tue, Jul 08, 2003 at 11:58:11AM -0600, Nelson, Ben wrote:i want snort to look at the ip range of 10.5.0.1 -10.5.4.254 but i cantfigure out how to input this into the ip list. how do iput that intothe var HOME_NET list? thanks for any helpvar HOME_NET [10.5.0.0/22,10.5.4.0/24]technically, thats not correct. You would also look at10.5.0.0 and10.5.4.255 which don't fit in the range specified. For themost part,that will work, but if you want to be exact, you need: var HOME_NET[10.5.0.1/32,10.5.0.2/31,10.5.0.4/30,10.5.0.8/29,10.5.0.16/28, 10.5.0.32/27,10.5.0.64/26,10.5.0.128/25,10.5.1.0/24,10.5.2.0/2 3,10.5.4.0/25,10.5.4.128/26,10.5.4.192/27,10.5.4.224/28,10.5.4 .240/29,10.5.4.248/30,10.5.4.252/31,10.5.4.254/32]aggregate is your friend. (echo 10.5.0.1 - 10.5.4.254 |aggregate -i range)-brian ------------------------------------------------------- This SF.Net email sponsored by: Parasoft Error proof Web apps, automate testing & more. Download & eval WebKing and get a free book. www.parasoft.com/bulletproofapps _______________________________________________ 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------------------------------------------------------- This SF.Net email sponsored by: Parasoft Error proof Web apps, automate testing & more. Download & eval WebKing and get a free book. www.parasoft.com/bulletproofapps _______________________________________________ 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
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Current thread:
- IP Range Problems Ryan Vennell (Jul 08)
- <Possible follow-ups>
- RE: IP Range Problems Hutchinson, Andrew (Jul 08)
- RE: IP Range Problems Esler, Joel Contractor (Jul 08)
- Re: IP Range Problems James Nonya (Jul 08)
- RE: IP Range Problems Nelson, Ben (Jul 08)
- Re: IP Range Problems Brian (Jul 08)
- Re: IP Range Problems Bryan Irvine (Jul 08)
- Re: IP Range Problems Brian (Jul 08)
- RE: IP Range Problems Hutchinson, Andrew (Jul 09)
- Re: IP Range Problems Marc Quibell (Jul 09)
- Re: IP Range Problems Rich Adamson (Jul 09)
- IP Range Problems Ryan Vennell (Aug 06)
- Antwort: IP Range Problems m . stiefenhofer (Aug 06)
- Re: Antwort: IP Range Problems Erek Adams (Aug 06)
- Re: IP Range Problems lists (Aug 06)
- Antwort: IP Range Problems m . stiefenhofer (Aug 06)