In order to protect your printer from unauthorized access over a wired or wireless network, you should protect your network ambient using appropriate security measures. In this article, we’ll consider some of the Network security recommendations for your Epson L3150 printer so that the network you are using to connect your printer too, is secure and safe from unauthorized access.

Followings are some of the security measures those are very much helpful to deter threat such as loss of user data, or use of telephone and fax lines, or other intrusions.
Enabling Security on your wireless LAN

Enable the appropriate security on the wireless LAN you plan to use with the printer. Network security such as a network password can deter interception of traffic over the wireless LAN. Your router may already have a default password enabled by your internet service provider (ISP). See your ISP and router documentation for instructions on how to change the default password and better secure your network.
Connecting your printer only to a firewall-protected network

Connecting your printer directly to the internet may leave it vulnerable to security threats. Instead, connect it to a router or other network connection protected by a firewall. Your router may already have a firewall set up by your internet service provider, check with your ISP for confirmation. For best results, set up and use a private IP address for your network connection.
Change default administrator password for the printer

If your product has an option to set an administration password, change the default administrator password to deter access by unauthorized users to personal data stored on your printers, such as IDs, passwords, and contact lists.