Snort mailing list archives
AW: OpenSource Alternative to SourceFire's RNA
From: "Sean Wheeler" <s.wheeler () netprotect ch>
Date: Wed, 31 Mar 2004 19:54:39 +0200
hi, Well I would not say that I am creating anything new, infact it's mainly adding glue to existing opensource tools I have created a DB schema which will support selective allocation of rules per host amoungst many other features, but this one more to your point STAGE 1: DB schema for IP/MAC/PROTO/PORTS the host is defined by IP/MAC/OS/OPEN PORTS this data is passively collected off the network. Process : arpwatch -> IP/MAC DB TABLE nwatch -> OPEN PROTO/PORTS DB TABLE p0f -> Updates IP/MAC TABLE with OS fingerprint For control host/port can be manually added or disapproved from the above tables. I have the above working reliably already. STAGE 2: DB schema for existing signature manipulation and new sig creation I have this working reliably already STAGE 3: DB schema for sig->OS map->App map I have the schema worked out, presently populating data First run has been extracting data from my DB static reference, sig's and sig doc's matching OS to sid etc (all scripts rip the data directly from the raw snort snapshots, so there is minimal manual labour here ) obviously adjusting the schema as we go ;) STAGE 4: DB schema for snort events, present DB schema is nice, but not scalable and snort wastes alot of time dealing with menial DB entries ( I have the sig's in the DB already..I don't need snort building another table of signature/sig_reference/sig_class etc etc etc ) STAGE 5: Create a frontend to it all. ( presently working purely inside the DB ..lol oh well it's a BIG place in there ;) and if you got to the bottom of this long blah blah, my goal is to create an opensource management platform surrounding snort, not just looking at events. regards Sean -----Ursprüngliche Nachricht----- Von: snort-users-admin () lists sourceforge net [mailto:snort-users-admin () lists sourceforge net]Im Auftrag von Josh Berry Gesendet: Mittwoch, 31. März 2004 17:39 An: AJ Butcher, Information Systems and Computing Cc: snort-users () lists sourceforge net Betreff: Re: [Snort-users] OpenSource Alternative to SourceFire's RNA I am not looking for correlation, I have already done a great deal of development on an application that correlates Snort/Nessus/Windows Event Logs/and working on Firewall logs. What I want is something that tracks MAC's across the network, updating information such as current IP address, operating systems, port being used, and services running on the used ports. This information should be collected passively like SourceFire's RNA or similar to Tenable's NeVo product. With this kind of information an adaptive security environment could be created that automatically tunes IDS/VA devices to match the current threat level for the network environment. The only way I know of how to do this is to create signatures in Snort that recognize specific services and Operating Systems, log them in a format such as CSV and then run a background process that tails the CSV file and inputs new information into a database, or updates old information with current changes. This method however would be a big undertaking as there are thousands of applications and versions out there. The most efficient method I can think of is to classify application types (DB/WWW/FTP/DNS) with common port listings and assign signatures to the class listings in one big database. Once done a script could be created to automatically generate the signatures. Thanks
--On 30 March 2004 09:25 -0600 Josh Berry <josh.berry () netschematics com> wrote:Is anyone working on OpenSource Alternatives to SourceFire's RNA product? I was thinking about using p0f to dump OS information into a file and then export it to a database but I really would like to gather service level information and eventually passively identify vulnerabilities. The only ways that I can think of getting any of this kind of information passively is with NTOP or developing signatures for Snort alerting on specific services (Seeing Apache 1.3.29 in an HTTP string), sending that data to a file and then exporting it with another program only updating new entries. At any level it would be a massive undertaking, anyone interested?OS-Sim <http://www.ossim.net> looks like the way to go; it correlates the results of previous Nessus scans with Snort alerts, and bumps the priority of alerts appropriately. Best Regards, Alex. -- Alex Butcher: Security & Integrity, Personal Computer Systems Group Information Systems and Computing GPG Key ID: F9B27DC9 GPG Fingerprint: D62A DD83 A0B8 D174 49C4 2849 832D 6C72 F9B2 7DC9
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Current thread:
- AW: OpenSource Alternative to SourceFire's RNA Poppi, Sandro (Mar 31)
- <Possible follow-ups>
- AW: OpenSource Alternative to SourceFire's RNA Sean Wheeler (Mar 31)