I'm running ISA server 2004 on a Windows 2003 server. I don't have much experience with ISA 2004. I setup an ISA firewall rule as follows:
Name: Internet Access
Allow: FTP, HTTP, HTTPS
Condition: Allow Internet Access (AD group), System and Network Service
I'm not running the firewall client and have unchecked the Enable folder view for FTP sites.
I need to limit FTP, HTTP, and HTTPS access to only the permitted users in the AD group.
Internet is working correctly using this rule but FTP is not. I'm receiving an error on the client... Error code: 502 Proxy Error. When I look at the ISA monitoring the request is being blocked by the rule mentioned in this post, Internet Access.
Does anyone have a suggestion other than installing the firewall client or permitting all user access?