RE: [lists] Re: About AsyncOS from IronPort

["Curt Purdy" <purdy () tecman com>]

We use IronPort and I highly recommend it.  Sophos is a great first line of
defense, IronPort's own Anti-SPAM is also a good first line with the
installed BrightMail nicely cleaning 98% of the rest with no false
positives.  Our email admin now actually has time on his hands instead of
working overtime and weekends.

Curt Purdy CISSP, GSNA, GSEC, CNE, MCSE+I, CCDA 
Information Security Officer 
If you spend more on coffee than on IT security, you will be hacked. 
What's more, you deserve to be hacked. 
-- former White House cybersecurity czar Richard Clarke 

 

> -----Original Message-----
> From: Lynx [mailto:lynx () enemy org] 
> Sent: Thursday, March 30, 2006 5:12 PM
> To: pen-test () securityfocus com
> Subject: [lists] Re: About AsyncOS from IronPort
>
> Hello!
>
> I did an evaluation for sysadmin purposes of an Ironport gateway.
>
> On Mar 30, 2006 at 1659 +0200, carlopmart appeared and said:
> >  somebody knows which software for MTA, anti-spam engine, 
> etc IronPort 
> > use?. I find that antivirus is sophos.
>
> Antivirus engine is Sophos. The MTA is their own. They 
> developed an high-performance MTA for AOL and use it in their 
> appliances. The antivirus engine is either Symantec 
> Brightmail or again their own antivirus engine.
>
> >  - AsyncOS kernel supports more than 10,000 simultaneous 
> connections. 
> > Is this right? Linux and BSD kernels doesn't support this "feature"?
>
> AsyncOS is vere capable and can handle such load. It depends 
> on the hardware though. AsyncOS is based on *BSD; Linux and 
> *BSD can handle similar loads if configured properly.
>
> >  - "IronPort also developed a high performance file system 
> and an I/O 
> > driven scheduler optimized for the asynchronous nature of 
> messaging". 
> > Is this high performance filesystem based on UFS2, ext3, 
> reiser, ... 
> > etc or a new type of filesystem?
>
> I have no information about their filesystem.
>
> >  - "For example, 1000 threads,each with a 1MB stack, would 
> consume 1 
> > GB of RAM! [...]" Really??
>
> I think you might have to try it. I believe that the system 
> uses load limits when under pressure, but we didn't test that.
>
> Best,
> Lynx.
>
>
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This List Sponsored by: Cenzic

Concerned about Web Application Security? 
As attacks through web applications continue to rise, you need to proactively 
protect your applications from hackers. Cenzic has the most comprehensive 
solutions to meet your application security penetration testing and 
vulnerability management needs. You have an option to go with a managed 
service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm). 
Download FREE whitepaper on how a managed service can help you: 
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And, now for a limited time we can do a FREE audit for you to confirm your 
results from other product. Contact us at request () cenzic com
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