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OWA through Internet

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  • OWA through Internet


    I want to access the OWA from my branch office through Internet.Let me explain my setup.
    1).We have one fixed IP from ISP for our domain.
    2).We have application server with IIS that needs to be accessed from internet.IP is -- Is configured and working fine.
    3).We have exchange server configured for OWA.This also needs to be accessed from branch office.Ip is -- Is not configured yet

    When i access my application from my branch office i will be asked for a user name password from the server to authenticate.

    We have ADSL router connected to PIX firewall.ADSL router was configured through cisco SDM and the port 80 is forwarded to the outside IP of the firewall.

    Firewall there is a forwarding done for port 80 to IP

    I tried to change the port number of exchange IIS to 8080 and it works internally.But when i try from outside it does not.

    Router external IP : Public IP
    Internal IP :

    PIX outside interface :
    Inside interface :

    Please sugegst how can i publish my OWA.

    My Config is as follows

    Router :
    ip nat inside source static tcp 80 Public IP 80 extendable
    remark permit inbound access
    permit tcp any host Public IP eq www
    access-list 23 remark SDM_ACL Category=17
    access-list 102 permit ip any

    PIX :
    access-list 101 permit tcp any any eq www
    static (inside,outside) tcp interface www www netmask 0 0

    The only information i got from the customer is posted above.Please help me.