Re: VPN connection using ISA Server 2000
- From: "Marrow K.L. Yung" <marrow.yung@xxxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Tue, 13 Jan 2004 10:25:43 +0800
thanks
Very best regards,
Marrow Yung.
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: Tuesday, January 13, 2004 1:46 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: VPN connection using ISA Server 2000
http://www.ISAserver.org
VPN connections are much more CPU-hungry than most others, if for no other
reason, than the encryption calculations that have to
occur for each and every packet.
Watch your CPU usage compared to RRAS connection counters. If you see CPU
above 50% for only a few connections, it's time to move
up to a better machine or try a crypto-offload card.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://www.microsoft.com/isaserver
http://isaserver.org/Jim_Harrison
http://isatools.org
Read the help, books and articles!
----- Original Message -----
From: "Ray Dzek" <rdzek@xxxxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Monday, January 12, 2004 09:14
Subject: [isalist] Re: VPN connection using ISA Server 2000
http://www.ISAserver.org
----- Original Message -----
From: "Jim Harrison" <jim@xxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Monday, January 12, 2004 7:30 AM
Subject: [isalist] Re: VPN connection using ISA Server 2000
> http://www.ISAserver.org
>
> My point was that regardless of the NIC you install, the primary limiting
factors will still be the Internet connection and the CPU
> itself.
> IMHO, you'd be best served by moving your VPN server to the ISA itself and
let Windows RRAS handle the job.
Are there any benchmarks that you are aware of that show CPU/VPN session
requirements. Since we do use ISA as our primary VPN server as well, I have
certainly, in hindsight now, noticed a performance degredation since we
started moving our outside-sales to VPN connections. The existing box is
only a P-III/450
>
> Jim Harrison
> MCP(NT4, W2K), A+, Network+, PCG
> http://www.microsoft.com/isaserver
> http://isaserver.org/Jim_Harrison
> http://isatools.org
>
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