Check the listing for details. Cisco Systems 4 Port Pix 501 Series Networking Firewall. Condition: Used. Listed at 20.00 USD. Get reliable network security with this Cisco Systems Pix 501 Series Networking Firewall. With four LAN ports and wired-Ethernet connectivity, it offers seamless network connectivity for your enterprise networking needs. This standalone firewall device from Cisco is built to provide top-notch network protection without compromising on speed and performance. Ideal for use in the office, this firewall device is designed to keep your network secure from cyber-attacks, unauthorized access, and other security threats. With Cisco Pix 501, you can rest assured that your network is protected round the clock. This device is perfect for businesses that require robust network security, without mentioning the condition of the firewall device.