Remote debugging to CentOS error

I have downloaded CentOS Linux as a Parallels VM and installed the Xojo Remote Debugging tool. But when I try to connect to it with Xojo on my Mac Xojo gives the following error:

Any clues anyone? I have Windows 8/XP and Ubuntu working fine the same way. It sounds like a firewall issue, but cannot find any way to fix it.

BTW I can copy my built app across and run it fine, just not debug! It is a Web app I am running, not desktop.

That’s a fancy way of saying that we couldn’t locate the remote debugger. Try turning the firewall off in your vm and see if that helps. If so, look in the options for the remote debugger. There’s a port listed there which will need to be opened in the firewall. (Turning the whole thing off is just easier for testing the theory)

Greg, that worked, thank you. For the benefit of others, from the terminal prompt:

service iptables save
service iptables stop
chkconfig iptables off

This is a throw-away VM, so I am not worried about security. Apparently this works for CentOS, Ubuntu and RedHat.