I agree with your word let "customer network admin selects it". But Tipping Point, Juniper, Cisco and Snort will have a wide range of customers, and maintaining different signature set for different Orgs is a big headache.
All these guys are maintaining 95% to 99% detection coverage at NSS testing. That's why i asked about the selection criteria. On Fri, Oct 9, 2009 at 1:36 AM, <[email protected]> wrote: > On Fri, 09 Oct 2009 00:47:24 +0530, srujan said: > > > What is the vulnerability selection criteria of Tipping Point, Juniper > IPS > > products. > > > > Is it covering each and every CVE ID or is it selecting particular kind > of > > attacks. If so what is selection criteria (cvss score or severity level > or > > most publicly exploited) > > If the answer isn't "customer network admin selects it", the products are > broken and brain damaged. Different sites have different security stances, > and different opinions regarding the trade-off between the added security > benefit and the throughput and latency hits you take. > > Even within a site, the trade-offs may vary. I have some machines that > are actually air-gapped, some that are heavily firewalled, and some that > are lightly firewalled - and there's probably some Snort sensors and > honeypots > too.. ;) > > If you're asking for "what pre-canned detection rules they come with", it's > probably "all the known vulns that we can figure out how to write a Snort > rule that doesn't suck resources". :) > > OK, maybe they don't use Snort - but the same problems of filter > expressiveness, whether/how to do a regexp, and so on, are faced by all > IDS/IPS > systems. If you need to do a regexp backref, it's going to either not be > part > of the available toolset, or it's going to suck at line rate on high speed > interfaces. Matching '\((134|934){3,5})\(foo|bar)(more ugly)(\1|\2)' is > going > to suck whether it's Snort or silicon. > >
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