I am getting the following error with Likewise 4.0.5 on Ubuntu 8.04.

The configuration stage 'open ports to DC' cannot be completed automatically. Please manually perform the following steps and rerun the domain join:

Some required ports on the domain controller could not be contacted. Please update your firewall settings to ensure that the following ports are open to 'DC-1.corp.test.com':
88 UDP
137 UDP
389 UDP
464 UDP
123 UDP

Error code: (null) (0x00080043)

Backtrace:
main.c:310
djmodule.c:248
djmodule.c:211

I'm wondering if there is a way to change DR-1.corp.test.com to another Domain Controller. The domain controller DC-1 is not behind a firewall. Any assistance would be greatly appreciated.

Hi,

the issue you are seeing regarding firewall ports are due to firewall ports on the client side. Perhaps there is a firewall up on the client, no?

One way to find out the root cause is to run some commands:

telnet corp.test.com <port>

If the telnet request fails, then it implies that the port is open. Otherwise, if you do not receive a failure message, it most likely means that the request is still attempting to connect via the port, which most likely a firewall is blocking the port.

Please let me know if this helps you out or if you have further questions.

Thank you.

hiya.

I have the the exact same problem.

What exactly do you mean with "client"? For me the client is the computer that tries to connect to the DC. Correct?

If so, I have another question regarding the basic nature of Linux / Xubuntu. Does Xubuntu come with a firewall? And/Or does Linux block ports automatically? I always thought that Linux opens ports on demand.

Anyhow, I did the "telnet-test" and got the following results:

~$ telnet DC-1.corp.test.com 88
Trying 100.200.10.20...
Connected to 'DC-1.corp.test.com'.
Escape character is '^]'.
^]
Connection closed by foreign host.
~$ telnet 'DC-1.corp.test.com' 137
Trying 100.200.10.20...
Trying 100.200.10.21...
Trying 100.200.10.22...
telnet: Unable to connect to remote host: Connection refused
~$ telnet 'DC-1.corp.test.com' 389
Trying 100.200.10.20...
Connected to 'DC-1.corp.test.com'.
Escape character is '^]'.
^]
Connection closed by foreign host.

..and so on. According to this port 88 is closed, 137 open and the other ports are closed as well.

I talked to the AD-Admin and she ensured me that all the ports are open - she also said that there where no registered attempts from my ip to use the ports.

Any ideas what else could be causing the problem?