I'm running firmware version 5.0.0r4.0. I have to admit some ignorance
of 'deep packet inspection', but I would assume that it's looking for
malformed packets that could be an exploit attempt.

Thanks,
Erick

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On 
> Behalf Of knighTslayer
> Sent: Wednesday, July 21, 2004 4:18 PM
> To: Exchange Discussions
> Subject: RE: DMZ ports for Front End Server
> 
> Erick,
> 
> I believe, though I could be wrong, that it supports the 
> concept of 'deep packet inspection' for proxies.  Though I 
> have no direct experience with that firewall to the degree of 
> configuring in-bound proxies.
> 
> What version/release is it running?  I may know someone who 
> can just answer that question straight.
> 
> 
> K 
> 
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On 
> Behalf Of Erick Thompson
> Sent: 22 July 2004 00:09
> To: Exchange Discussions
> Subject: RE: DMZ ports for Front End Server
> 
> Do you know if the Netscreen 25 can do that? 
> 
> Thanks,
> Erick 
> 
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of 
> > knighTslayer
> > Sent: Wednesday, July 21, 2004 3:50 PM
> > To: Exchange Discussions
> > Subject: RE: DMZ ports for Front End Server
> > 
> > Better off with ISA Proxy very true too.
> > 
> > Or any decent firewall that can smart proxy in-bound tcp traffic. 
> > Probably cheaper than introducing ISA server in to the frame.
> > 
> > Check with you firewall vendor.
> > 
> > A good firewall example:
> > 
> > http://www.cyberguard.com/news_room/whitepaper_smartproxies.cfm
> > 
> > K
> > 
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On 
> Behalf Of Ed 
> > Crowley [MVP]
> > Sent: 21 July 2004 23:42
> > To: Exchange Discussions
> > Subject: RE: DMZ ports for Front End Server
> > 
> > You're better off with a web proxy server in the DMZ such 
> as ISA than 
> > a front-end server.
> > 
> > Ed Crowley MCSE+Internet MVP
> > Freelance E-Mail Philosopher
> > Protecting the world from PSTs and Bricked Backups!T
> > 
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of 
> > knighTslayer
> > Sent: Wednesday, July 21, 2004 3:24 PM
> > To: Exchange Discussions
> > Subject: RE: DMZ ports for Front End Server
> > 
> > I agree with Dean.
> > 
> > If at least the FE server is in a DMZ and you are logging on both 
> > External AND DMZ interfaces on your chosen firewall, then 
> you are much 
> > better informed than JUST logging on a External to Internal NAT'd 
> > level.
> > 
> > It's a given that we all review firewall log reports regularly of' 
> > course.
> > 
> > My two cents.
> > 
> > K
> > 
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of 
> > Dean Cunningham
> > Sent: 21 July 2004 23:12
> > To: Exchange Discussions
> > Subject: RE: DMZ ports for Front End Server
> > 
> > I need no convincing, your the one that needs convincing ;-)
> > 
> > 
> > 
> > >>> [EMAIL PROTECTED] 22/07/2004 9:22:41 a.m. >>>
> > You keep convincing yourself of that...  ;o)
> > 
> > -----Original Message-----
> > From: Dean Cunningham [mailto:[EMAIL PROTECTED]
> > Sent: Wednesday, July 21, 2004 5:00 PM
> > To: Exchange Discussions
> > Subject: RE: DMZ ports for Front End Server
> > 
> > You'll never convince me to do that ;-) if the FE is 
> compromised, so 
> > is your whole network.
> > At lease with it in the DMZ, you have some control over the 
> ports and 
> > addresses it can connect internally to.
> > 
> > What persuaded you to change?
> > 
> > >>> [EMAIL PROTECTED] 22/07/2004 7:10:36 a.m. >>>
> > It is not really THAT many ports, but we had these 
> discussions here a 
> > bunch ot times and came to a conclusion that front-end in DMZ would 
> > not be a good thing to do. I actually used to be for the 
> DMZ idea in 
> > the past but got persuaded to change my mind.
> > 
> > If you still want to explore it, there are MS whitepapers on 
> > front-end/back-end Exchange configuration and on Exchange 
> hosting that 
> > show all the ports that you will need to open.
> > 
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of 
> > Rosselle, Brett
> > Sent: Wednesday, July 21, 2004 3:05 PM
> > To: Exchange Discussions
> > Subject: RE: DMZ ports for Front End Server
> > 
> > 
> > I haven't actually deployed it(in production) yet, so 
> either option is 
> > still viable.
> > 
> > Any particular reason for not having it in the DMZ, other 
> than having 
> > to define a zillion ports, or is that the main reason? If 
> it is, it's 
> > a good enough reason for me.
> > 
> > Brett
> > 
> > 
> >   
> > --
> > Brett Rosselle
> > Systems Administrator
> > Brightpoint North America
> > 317.707.2525 Tel
> > 317.707.2397 Fax
> > [EMAIL PROTECTED]
> >  
> > 
> > -----Original Message-----
> > From: Martin Blackstone [mailto:[EMAIL PROTECTED]
> > Sent: Wednesday, July 21, 2004 1:57 PM
> > To: Exchange Discussions
> > Subject: RE: DMZ ports for Front End Server
> > 
> > I concur
> > 
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of 
> > Fyodorov, Andrey FTL
> > Sent: Wednesday, July 21, 2004 11:57 AM
> > To: Exchange Discussions
> > Subject: RE: DMZ ports for Front End Server
> > 
> > Take that front-end out of DMZ and put it into the internal network.
> > 
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of 
> > Rosselle, Brett
> > Sent: Wednesday, July 21, 2004 2:40 PM
> > To: Exchange Discussions
> > Subject: DMZ ports for Front End Server
> > 
> > 
> > 
> > 
> > I'm guessing this had been covered in the past. I thought 
> the Exchange 
> > discussions website had a search feature, but either it 
> does not, or I 
> > am just not capable of finding it.
> >  
> > I'm trying to find a list of the minimum ports needed for a
> > 2003 Front End server to be able to connect back to the internal 
> > network from the DMZ.
> >  
> > I found this link:
> >  
> > http://support.microsoft.com/default.aspx?scid=kb;en-us;Q278339
> >  
> > Not sure if it's correct for this aplication. Is there a 
> better list 
> > somewhere?
> >  
> > Thanks,
> >  
> > Brett
> >  
> >  
> > --
> > Brett Rosselle
> > Systems Administrator
> > Brightpoint North America
> > 317.707.2525 Tel
> > 317.707.2397 Fax
> > [EMAIL PROTECTED]
> >  
> > 
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