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You should be able to. &nbsp;You might have to change a few of your policies especially if they are based off AD user authentication. &nbsp;If you can't easily join the server you probably should stop the ISA service and then join it to the domain. 
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You should be able to.  You might have to change a few of your policies especially if they are based off AD user authentication.  If you can't easily join the server you probably should stop the ISA service and then join it to the domain.

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yes - you can but it is a little harder.<br />
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As ISA will be running, you will need to set the rules to allow the domain registration. Stopping the ISA will not help because that will simply stop all traffic.
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yes - you can but it is a little harder.

As ISA will be running, you will need to set the rules to allow the domain registration. Stopping the ISA will not help because that will simply stop all traffic.

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Found that I only stopped the ISA services, joined the domain then rebooted the system and it worked. &nbsp;Now if I can just figure out the access rules.... but that is for another question.
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Found that I only stopped the ISA services, joined the domain then rebooted the system and it worked.  Now if I can just figure out the access rules.... but that is for another question.

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I am setting up an ISA 2006 server and I will not be at the companies site &nbsp;until I have it configured. &nbsp;Can I install and configure the ISA server, deliver it to the company and then join their domain?
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I am setting up an ISA 2006 server and I will not be at the companies site  until I have it configured.  Can I install and configure the ISA server, deliver it to the company and then join their domain?

Can I install ISA 2006 then join a domain?

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.

Microsoft Forefront ISA Server

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.