1) create property files /tmp/users.properties and /tmp/roles.properties /tmp/users.properties: admin=admin /roles.properties: admin=JBossAdmin 2) add legacy configuration to application server <security-domain name= "legacyDomain" cache-type= " default " > <authentication> <login-module code= "UsersRoles" flag= "required" > <module-option name= "usersProperties" value= "/tmp/users.properties" /> <module-option name= "rolesProperties" value= "/tmp/roles.properties" /> </login-module> </authentication> <mapping> <mapping-module code= "SimpleRoles" type= "role" > <module-option name= "admin" value= "User" /> </mapping-module> </mapping> </security-domain> ... <elytron-integration> <security-realms> <elytron-realm name= "exportedDomain" legacy-jaas-config= "legacyDomain" /> </security-realms> </elytron-integration> 3) setup Elytron part: /subsystem=elytron/simple-role-decoder=roles-decoder:add(attribute=Roles) /subsystem=elytron/security-domain=elytronDomain:add( default -realm=exportedDomain,permission-mapper= default -permission-mapper,realms=[{realm=exportedDomain,role-decoder=roles-decoder}]) /subsystem=elytron/http-authentication-factory=elytron-http-auth:add(http-server-mechanism-factory=global,security-domain=elytronDomain,mechanism-configurations=[{mechanism-name=BASIC,mechanism-realm-configurations=[{realm-name= "Exported Realm" }]}]) /subsystem=undertow/application-security-domain=print-roles:add(http-authentication-factory=elytron-http-auth) 4) Deploy application for printing roles (see attachments) 5) Access http://127.0.0.1:8080/print-roles/protected/printRoles?role=User&role=JBossAdmin and login with admin/admin - only role JBossAdmin is assigned 6) Optional: in deployment, change security-domain in jboss-web.xml to legacyDomain (to use legacy security domain directly) and access application again - both roles JBossAdmin and User are assigned