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Firewall Client Encryption Question

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Firewall Client Encryption Question - 6.Oct.2003 4:05:00 PM   
Guest
Hello,

We are using an IDS on a segment that also contains a MS ISA Server. The clients run the ISA Firewall Client. I am not the familiar with the product, so excuse a stupid question, but is the traffic between the client (with the firewall client) and the ISA server encrypted? Is it possible for an IDS to see this traffic?

I know we can put the IDS outside the ISA server and watch its requests to the internet, but that doesn' let us see any user info.

Any suggestions or any information about the traffic? Is it encrypted?

Thank you.

--Jeff
  Post #: 1
RE: Firewall Client Encryption Question - 7.Oct.2003 4:22:00 AM   
Guest
No, it is't encripted by default.

But you can enforce encription via IPSec policy.

Of course, the 2000/XP clients with domain and Certificate authority installed are required.

(in reply to Guest)
  Post #: 2
RE: Firewall Client Encryption Question - 7.Oct.2003 3:48:00 PM   
Guest
So does that mean a sniffer would be able to see and analyze this traffic?...or does it still encapsulate in a way that the sniffer would not be able to see the detailed data?

Thank you,
Jeff

(in reply to Guest)
  Post #: 3
RE: Firewall Client Encryption Question - 7.Oct.2003 7:47:00 PM   
spouseele

 

Posts: 12830
Joined: 1.Jun.2001
From: Belgium
Status: offline
Hi Jeff,

check out my article http://www.isaserver.org/articles/Understanding_the_Firewall_Client_Control_Channel.html .

HTH,
Stefaan

(in reply to Guest)
Post #: 4

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