Thanks Jeff and Jeff ;) I think I'm on the right track. It was a while back but I can remember that I was able to telnet to ports 80 and 1494 of the Terminal Servers. The accesslist restricts them to 2 Terminal Servers, the users do NOT have access to the DataCollector. This might be the problem if I understand Rick correctly. Like I said, the network guy is on holiday but I may have access to the pc's next week so maybe I can try a few things. I'll post feedback Regards Aleks -----Oorspronkelijk bericht----- Van: Jeff Durbin [mailto:techlists@xxxxxxxxxxxxx] Verzonden: maandag 11 oktober 2004 16:31 Aan: thin@xxxxxxxxxxxxx Onderwerp: [THIN] Re: Authentication Custom ICA Connection/Application Set In order to resolve an application set, the clients need to talk to the server. Clients will try to find Citrix servers via a broadcast on UDP 1604. If this is MetaFrame XP, your servers will not answer - the UDP method of resolving application sets is a MetaFrame 1.0/1.8 mechanism, and, while it can be enabled on a MetaFrame XP server, is no longer the recommended method. Even if you did enable it, your servers wouldn't respond because your VLANs are separate broadcast domains. You need to give your clients an IP address (or DNS name) of one or more of your servers. If your servers are running the XML service, which they should be by default, they will respond to your clients on port 80. On the 'Find New Application Set' dialog, click Server Location, ensure that HTTP/HTTPS is selected, click Add, and add the DNS name or IP address of one or more of your servers. As an aside, another way you can do this with minimal client configuration (assuming you have control of the clients' name resolution) is to create a DNS or WINs record called 'ICA' that resolves to one or more of your Citrix servers. The ICA client will, by default, try to resolve application sets using the name 'ICA' first. JD ******************************************************** This Weeks Sponsor RTO Software Do you know which applications are abusing your CPU and memory? Would you like to learn? -- Free for a limited time! Get the RTO Performance Analyzer to quickly learn the applications, users, and time of day possible problems exist. http://www.rtosoft.com/enter.asp?id=320 ********************************************************** Useful Thin Client Computing Links are available at: http://thin.net/links.cfm *********************************************************** For Archives, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: http://thin.net/citrixlist.cfm