Eureka! The problem is related to the problem discussed here: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=93668 And the solution is the same - edit the /etc/hosts file and add the IP address and host name of the system running the app server. For example, on my laptop I added this line: 192.168.1.104 ubuntuvm This is the IP address and hostname of the system running JBossAS. On Windows, I added the same line to my c:\windows\system32\drivers\etc\hosts file. Now JConsole connects. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4188927#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...