We currently have a windows server 2003 R2 running Microsoft SQL 2003 (service pack 1) 2 node cluster. This cluster is a active/passive cluster failing the instances from both directions. We have been asked by our network folks to change the the IP addresses of both nodes so we can move the cluster behind a firewall. This change would involve changes to the windows cluster, MSDTC and SQL server cluster IP addresses. Does anyone have any documented procedures or know of any procedures that would allow us to make IP changes safely without destroying and rebuilding the cluster.