Kerberos authentication for remoting on hostname which contains uppercase letter -------------------------------------------------------------------------------- Key: WFLY-5557 URL: https://issues.jboss.org/browse/WFLY-5557 Project: WildFly Issue Type: Bug Components: Domain Management, Remoting, Security Affects Versions: 10.0.0.CR3 Reporter: Martin Choma Assignee: Lin Gao Priority: Critical When EAP runs on server, which contains upper case in hostname (e.g. localhost.Localdomain), it is unpossible to make kerberos authentication in remoting to work properly. JDK constructs TGT-REQ with lower case hostname. But remoting client create connection to EAP with upper case letters, what cause problems. RFC4120 "The Kerberos Network Authentication Service" [1] in chapter "6.2.1. Name of Server Principals" requires ??Where the name of the host is not case sensitive (for example, with Internet domain names) the name of the host MUST be lowercase.?? Based on information from RFC, IMHO, EAP should handle such scenario. Either remoting client should send lowercase hostname or security realm should map principal case insensitively and look for lower-case keytab record, e.g. remote/localhost.localdomain. [1] https://www.ietf.org/rfc/rfc4120.txt