Encrypting network communication with stunnel

Stunnel is a program that acts as a proxy that removes, wraps, and encrypts the network communication using SSL thought tunnelling. It is suitable mainly to be used by DBAs for remote database administration or for encrypting communication (log transport) with DataGuard. In this recipe we will encrypt a connection between nodeorcl5 and nodeorcl1 using stunnel.

Getting ready

All steps will be performed on nodeorcl1 and nodeorcl5.

As a prerequisite download and install stunnel from http://www.stunnel.org/downloads.html both on nodeorcl1 and nodeorcl5.

How to do it...

1. We will start to configure stunnel as a service. Download stunnel_RC_script from http://www.gaztronics.net/rc/stunnel.php and copy it to /etc/init.d.

2. Next, change the owner permissions for stunnel to root and define it as a service as follows:

   [root@nodeorcl1 stunnel]# chown root:root /etc/init.dstunnel
   [root@nodeorcl1 stunnel]# chkconfig --add stunnel
   

3. Because stunnel will forward from...