Beginning Friday, October 30 at 9:00 PM until Saturday, October 31 at 2:00 AM, ITS will be replacing the existing "IDM" firewalls with a more robust upgraded new pair of firewalls. This is a replacement of equipment and involves no changes to the network (re: IP addressing, network configurations, etc). As such, no changes are needed to any services behind the firewalls, or to any systems that access services behind the firewalls. There will be service interruptions during the duration of this change to the following services:  DC[Domain Controller]-8,9,10, Exchange 2007, FR-4(Active Directory DNS service for Exchange), Google Search, LDAP (Campus only), OCS(Office Communications Server), Shibboleth, and Sitemason.