[fw-wiz] PIX -> ISA -> OWA Configuration

From: Jason Gomes (greyline_at_phreaker.net)
Date: 05/01/05

  • Next message: Nick Brandson: "Re: [fw-wiz] SSL VPN vs. IPSec VPN" 
    To: firewall-wizards@honor.icsalabs.com
Date: Sat, 30 Apr 2005 20:14:28 -1000

    What is the preferred placement for a OWA front-end server given these
    two possible network configurations and why?

    1) [Internet] <==> [PIX Firewall] <==> [ISA Proxy] <==> [PIX Firewall]
    <==> [OWA] <==> [Internal Net w/Exchange Svr]

    2) [Internet] <==> [PIX Firewall] <==> [ISA Proxy] <==> [OWA] <==> [PIX
    Firewall] <==> [Internal Net w/Exchange Svr]

    Notes:
    The ISA server is performing a reverse proxy for HTTPS connections.
    In #1, the backend firewall will only allow port 443 through to OWA.
    In #2, all ports required for OWA to communicate with the internal
    exchange server is allowed.
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  • Next message: Nick Brandson: "Re: [fw-wiz] SSL VPN vs. IPSec VPN"

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