ESX Time Source

set up ESX hosts with an NTP source…

VMWare KB

To configure NTP on the service console, you must:

Edit the following configuration files, as described in the following sections:
/etc/ntp.conf
/etc/ntp/step-tickers
/etc/hosts

For ESX Server 3.0 only, run the following command. This opens the appropriate ports and enables the NTP daemon to talk with the external server.

[root@esxhost]# esxcfg-firewall --enableService ntpClient

Restart ntpd.

Citrix::ICA::Session Sharing

Troubleshooting and Explaining Session Sharing
CTX159159

Understanding and Troubleshooting Citrix's Seamless Windows Engine
BrianMadden.com