Para qualquer outra pessoa que tenha encontrado isso com o JBoss 5.1.0 GA, as configurações que acabaram funcionando para nós foram semelhantes:
<Connector protocol="HTTP/1.1" SSLEnabled="true"
port="8543" address="${jboss.bind.address}" scheme="https" secure="true" clientAuth="false"
keystoreFile="/opt/novell/idm/jre/bin/mycert.keystore"
keystorePass="mypassword" sslEnabledProtocols="TLSv1,TLSv1.1,TLSv1.2"
ciphers="TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_W ITH_AES_256_CBC_SHA384,
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_W ITH_RC4_128_SHA,
TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_1 28_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA256,
TLS_RSA_WITH_AES_256_CBC_SHA,SSL_RSA_WITH_RC4_128_SHA" />