Re: iSeries vs IIS web site

The web server may have access, but it is still a more secure environment to
have the database be located on a different server. For instance, an
application firewall can be used to ensure the commands sent to the database
server are ones expected of the application.

On Tue, Apr 12, 2011 at 3:00 PM, Raul A. Jager W. <raul@xxxxxxxxxx> wrote:

I agree.

Since the web server is visible from the exterior, it can be
compromised. And, the web server has access to the database engine.

Therefore, having web server in a different machine from the database
does not add security.

Nathan Andelin wrote:

From: John Jones
I'll point out that there is legit concern if the i-based solution were

to

keep database, apps, and web services on a single LPAR.

I think that's a common misconception. I believe that centralized

architecture

tends to be more secure because it's less complex, and easier to manage,
particularly under IBM i.

By definition the database server would be in the outer DMZ as that's
where the web servers have to reside to be visible to the outside world.

What is an "outer" DMZ? It appears to me that the only reason for a DMZ

is to

isolate and hide a private network from a public one. If that's the case,

why

not just use routers to define your DMZ, rather than using a Web server

to

define it? I suspect that the idea of placing web servers in one network,

and

database servers in another caught on simply because Microsoft was

promoting it,

not because it was actually more secure.

Unfortunately, distributed architecture is so ubiquitous that people

naturally

fall in line with these unfounded notions about security.

-Nathan

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