Can I do this configuration??? I have SBS 2003 R2 andican'tpublish my OWA through the extranet,I don't know if these problem is becauseI have my ISA disable... I have a cisco router and i suppose that he does the same thing that isa.... If anycan help meI really appreciate...

Hi, Router can act as ISA to forward client request to Exchange. We need to perform the below steps to clarify this issue. First please try to browse http://exchange_server_name/exchange locally to see whether it is a OWA virtual directory issue. If we can browse that web page, then we assume it could be the owa publishing issue. Since OWA relies on the HTTP protocol, so make sure that port 80 has been open for it. Besides, Id like to know something information about your scenario. 1. Whether the external URL for OWA worked before you disabled ISA. 2. What Cisco Router you are using now? 3. How did you publish OWA, only forward request to Exchange Server? 4. How did you disable ISA, just stopped the services, uninstalled it? 5. Which port has been opened? Hope it helps. Xiu

First, thank you for your help... Ok look, Answers inline: First please try to browse http://exchange_server_name/exchange locally to see whether it is a OWA virtual directory issue. R/ In my intranetI can access successfully to the virtual directory and use the owa service If we can browse that web page, then we assume it could be the owa publishing issue. R/ I suppose that.... a publishing issue. For this reason I want to know if is a ISA problem or not. Since OWA relies on the HTTP protocol, so make sure that port 80 has been open for it. R/ No, previously we didn't have any publishing app or service behaind de internet. Besides, Id like to know something information about your scenario. 1. Whether the external URL for OWA worked before you disabled ISA. R/ I never intalled the ISA server in my SBS... 2. What Cisco Router you are using now? R/ Cisco 2811 3. How did you publish OWA, only forward request to Exchange Server? R/ Yes and also I did a little configurtations in the IIS and the dns paths 4. How did you disable ISA, just stopped the services, uninstalled it? R/ Well, I have not seen the necessity to activate the service, because we already have a router doing the same thing that would do the ISA. 5. Which port has been opened? R/ In my router I opened 80 and 443 Thanks in advance for your help

Hi, Since this is a OWA publishing by Cisco issue, I'd like to recommend you to contact Cisco support to get better help. Cisco Support http://www.cisco.com/web/psa/products/tsd_products_support_troubleshoot_and_alerts.html Besides, I'd like to share article from Cisco about Clientless SSL VPN (WebVPN) Clientless SSL VPN (WebVPN) on Cisco IOS with SDM Configuration Example http://www.cisco.com/en/US/products/ps6496/products_configuration_example09186a008071c58b.shtml Important Note: Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information. More information share with you: ISA can secure OWA better than any other method. This is because it talks actually looks at http at a higher level on the osi model. Before the requests are forwarded, ISA has talked to the OWA api's and authenticated you. With a router, you would redirect and permit port 443. IIS would be on its own (for the most part) for securing the transaction. Publishing Exchange Server 2007 with ISA Server 2006 http://technet.microsoft.com/en-us/library/bb794751.aspx Hope it helps. Xiu