Work with tcpwrappers hosts.deny and hosts.allow

You can use tcpwrappers to Block user,ip,daemon from outside or your inside newwork. For allow use host.allow file and to block use host.deny file.

Step 1. Use your favorite editor like vi.

Step 2. Type vi /etc/hosts.deny
Step 3. At the bottom line just type “ALL:ALL:deny” to restricted all of daemon process
Step 4. Save it.
Step 5. Open “/etc/hosts.allow” with vi editor
Step 6. At the buttom line “ALL :(some ip that you allow):allow” to allow anything from my IP address
Step 7. Save it.