Blocking Ports

The open ports to NE might be unused and can be vulnerable to attacks from outside. Port scanners such as nmap utility can be used to determine the open ports on the NE. The hacker can stop/affect NE functionalities by detecting the vulnerabilities in any of these open ports. The administrator should block such vulnerable ports. After upgrading the services with latest patches, the administrator can unblock these ports.

To block ports,

1. Log into the network element with admin access privilege.
2. Click Security > Security Settings. The Security settings page is displayed.
3. Click BlockedPorts. The Blocked Services page is displayed.
4. Click Block a New Service.

   

5. Enter port number to be blocked.
6. Click BlockService. A success message is displayed. The port number selected is blocked.