IDS: Re: RE: IPS Reliability/Availability

[y8k0vt3p () yahoo com]

> The primary "con" is that it's a fairly new approach, and therefore it's
> difficult to get people on the bandwagon.
> - it's hard to convince people that this solution is actually as 
> fast (or faster) than an ASIC solution for the same price. ASICs have 
> been around a long time, and people have a kind of warm fuzzy from that 
> older technology.
I’m wondering why CPU cluster technology that you are deploying is considered new in comparison to ASIC/FPGA/NP 
technology.

Obviously, “software + CPU cluster” technology has some attractive properties.
However, it also has several nasty properties, especially in the IDS space. In addition, the problems get nastier with 
adding more CPUs to the cluster, so there are a limit how many CPUs you can put in a cluster. 
For starters, if your load balancing scheme is based on TCP/UDP port numbers,
            you’ll have a hard time detecting even simple port scan.

- Jack

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