How to Use TCP Wrappers to Control Access to TCP Services

1. Become superuser.

2. Turn TCP Wrappers on by editing the /etc/default/inetd file by adding the following line.

   ENABLE_TCPWRAPPERS=YES

   ---

   Note –

   If the previous line already exists with a comment symbol, then you can just delete the comment symbol.

   ---

3. Kill the inetd daemon.

4. Restart the inetd daemon.

5. Configure the TCP Wrappers access control policy as described in the hosts_access(4) man page.