Re: Proxy Server versus Firewall
- From: "SuperGumby [SBS MVP]" <not@xxxxxxxxxxx>
- Date: Sat, 8 Apr 2006 07:16:28 +1000
When you say 'We currently have a firewall enabled.' it can mean several
things.
Do you have a firewall appliance? and if so, is this a 'simple NAT router'
(which isn't really a firewall at all) or a more advance appliance?
Do you mean that you have a two NIC SBS Standard setup and chose to 'enable
firewall' during the CEICW? This is not much better than a simple NAT
router, using basic windows RRAS packet filtering capability.
Or, do you mean you have a two NIC SBS Premium with ISA installed? ISA is a
fully certified packet & application filtering firewall and proxy server. It
has an advantage over many firewall products in the area of 'application
layer' filtering (and no , I don't mean port level filtering).
A properly configured proxy/firewall will inspect the requests and returned
traffic, controlling access based on 'who' makes the request, 'when' they
make the request, 'where' the request is sent, validity of the outgoing
request, and validity of the returned data. ISA, in conjunction with the ISA
firewall client will also validate 'which application' made the request.
"jsccorps" <jsccorps@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:40FEE173-15A5-47DB-BF3A-200B0EF7A7C8@xxxxxxxxxxxxxxxx
Client plans to do online banking (e.g., transferring scanned checks) .
We
currently have a firewall enabled. I was told that to enhance security an
"authenticating proxy server" should be installed. Looking for additional
insight in this area. Any suggested articles or web sites would be
appreciated.
.
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