Hi ALL! Could anybody tell me which ports I must open in a firewall (in a node) in order to allow JBOSS instances run properly in a cluster? AFAIK JBOSS instance consists of services which can/should interoperate with services on other cluster's nodes to support cluster. For interoperation service uses some port(s). For example HA-JNDI uses port 1100 by default. But I'm not aware of all ports which are used instances to support cluster.