Firewall (CXi, CXi II, MXe and MXe Server only)

Description:

• Note: The Firewall feature is not applicable to MCD for Industry Standard Servers (ISS).

For security, the CXi and MXe can function as a firewall, dropping or rejecting unknown packets, allowing or disallowing IPSec A standard security protocol that provides authentication and encryption over the Internet. IPSec is used predominantly in the construction of Virtual Private Networks. and PPTP PPTP or Point to Point Tunneling Protocol encapsulates data sent over the Internet within a virtual private network (VPN). pass-through, and performing many-to-1 NAT See "Network Address Translation" (IP masquerading).

By default, all inbound traffic is blocked by the firewall with the exception of packets for establishing PPTP VPN See Virtual Private Network. tunnels and ICMP ICMP or Internet Control Message Protocol is a protocol that generates error messages, test packets, and informational messages related to IP. requests to the IP address of the WAN interface.

Conditions and Feature Interactions

• Firewall protection is provided on the WAN (Internet Gateway) port only.

Programming

• Complete the Firewall Control form.

• (Optional) Program the Port Forward Table form to allow external traffic to reach resources on the internal network.

Operation

None.