Install ISA (Internet Security & Acceleration)?

We're installing Small Business Server Premium.

We've already gone through most of the install.  We upgraded our Sharepoint database to SQL Server 2000 using the Premium Services CD.

However, we're wondering if we should go ahead and install ISA (Internet Security & Acceleration) as well.  I've heard that this can be fairly complex to administer.  We're a small business with very limited budget and IT resources, so I don't want to get us into a situation where we need to spend a lot of money on external resources.

Our hardware will be configured such that our SBS will be connected something like this

Local Machines -> Switch -> SBS NIC1 -> SBS Server -> SBS NIC2 -> Wireless Router (hard wired to SBS Server) -> Modem -> Internet

The wireless router is your basic LINKSYS variety.  Will it be adequate for providing our firewall?

Our local machines will include some MACs.  Will they function behind the ISA?

Now that I'm thinking about it, will the wireless router cause any bandwidth issues (we'll have about 3/4 of a T1 coming in).


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Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
Personally, I don't deploy ISA for any of my clients with less than 15 employees unless they have some kind of regulatory requirement to have stricter security.  I believe that the cost of configuring and maintaining ISA CAN outweigh the benefits for smaller deployments... but that would depend on many things... so my comment is a broad generalization.

The Macs will funciton just fine with ISA, but I think that if you configure everything else you have according to best practices then you'll be fine.

Please see for details and you might find this article on "Good Enough" security to be of interest:


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crm_infoAuthor Commented:
Many thanks! (again).
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