5.4. Troubleshooting

If you see messages indicating that checkins are not taking place, the RHN client on your system is not successfully reaching Red Hat Network Satellite. Make certain:

your client is configured correctly.
your system can communicate with RHN via SSL (port 443). You may test this by running the following command from a shell prompt:
```
telnet xmlrpc.rhn.redhat.com 443
```
the Red Hat Network Daemon is activated and running. You may ensure this by running the following commands:
```
chkconfig --level 345 rhnsd on
```
```
service rhnsd start
```
If these are correct and your systems still indicate they are not checking in, please contact our technical support team.

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