Cluster Configuration Error Message - Unable to Add Unable to Connect Unable to Establish an SSL Connection

After I configure cluster Then when I add node one and node two the cluster I got the following error message. Why these error message through means two nodes are unable to communicate with each other.
Firewall is restricted there connection.

* Unable to add the key for node rhel5-redhat-configuration1.com to the trusted keys list.
* Unable to add the key for node rhel5-redhat-configuration2.com to the trusted keys list.
* Unable to connect to rhel5-redhat-configuration1.com: Unable to establish an SSL connection to rhel5-redhat-configuration1.com:11111: unable to resolve rhel5-redhat-configuration1.com
* Unable to connect to rhel5-redhat-configuration2.com: Unable to establish an SSL connection to rhel5-redhat-configuration2.com:11111: ClientSocket(hostname, port, timeout): connect() failed
 You can easily clear these problem.
Stop the firewall
Iptable and selinux
Then try it
[root@r-n-cluster1 Server]# Stop iptables
[root@r-n-cluster1 Server]#Chkconfig iptables off
[root@r-n-cluster1 Server]# Service iptables stop
Disable selinux
[root@r-n-cluster1 Server]#vi /etc/selinux/config
Edit the six lines as disabled
Then Restart the system then try it

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