Firewall Sample Configuration

The commands below configure the ATM interface and sub-interface with a negotiated IP address, CHAP username and password, and bans keepalives.

XSR(config)#interface ATM 0

XSR(config-if<ATM0/0>)#no shutdown

XSR(config-if<ATM0/0.1>)#interface ATM 0.1

XSR(config-if<ATM0/0.1>)#no shutdown

XSR(config-if<ATM0/0.1>)#encapsulation snap pppoa

XSR(config-if<ATM0/0.1>)#ip address negotiated

XSR(config-if<ATM0/0.1>)#ip mtu 1492

XSR(config-if<ATM0/0.1>)#ip tcp adjust-mss 1400

XSR(config-if<ATM0/0.1>)#ppp chap hostname red password sox

XSR(config-if<ATM0/0.1>)#no ppp keepalive

Note: If you have configured a VPN tunnel and wish to avoid intermittent Web browser problems, add the crypto ipsec df-bit clear command to your configuration.

IPoA

Enter the following commands to configure a IPoA topology:

XSR(config)#interface ATM 0

XSR(config-if<ATM0/0>)#no shutdown

XSR(config-if<ATM0/0>)#interface ATM 0.1

XSR(config-if<ATM0/0.1>)#encapsulation snap ipoa

XSR(config-if<ATM0/0.1>)#ip address 192.168.1.1 255.255.255.0

XSR(config-if<ATM0/0.1>)#ip mtu 1492

XSR(config-if<ATM0/0.1>)#exit

XSR(config)#ip route 0.0.0.0 0.0.0.0 30.0.0.10

XSR(config)#ip route 30.0.0.10 255.255.255.255 ATM 0.1

Firewall Sample Configuration

In this scenario, the XSR acts as a router connecting a branch office to the Internet, as illustrated in Figure 3-1. The branch office has two servers (Web and Mail) accessible from the external world and an internal network of hosts which are protected from the external world by the firewall. The Web and Mail servers are part of the DMZ and considered internal by the XSR. Note that some commands have been abbreviated.

3-12 Software Configuration

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Enterasys Networks XSR-3020 manual Firewall Sample Configuration, IPoA

XSR-3020 specifications

Enterasys Networks XSR-3020 is a sophisticated Layer 2 and Layer 3 switch designed to meet the demands of modern networking environments. Known for its robust performance and versatility, the XSR-3020 is an ideal solution for enterprises that require high efficiency, comprehensive security, and network reliability.

This switch supports a variety of advanced technologies, making it suitable for both data center and edge deployments. One of its standout features is its scalability. The XSR-3020 can accommodate growing network demands by allowing for easy integration of additional modules. This capacity for expansion ensures that organizations can adapt their networks without the need for complete hardware replacements.

The XSR-3020 offers high-speed connectivity through its multiple gigabit Ethernet ports, providing up to 48 10/100/1000BASE-T ports in a single chassis. This high-density design optimizes the physical space and ensures that organizations can connect numerous devices simultaneously without sacrificing performance. Additionally, it supports Power over Ethernet (PoE), allowing users to power network devices, such as IP cameras and access points, directly through the switch. This feature streamlines installations and reduces the clutter of electrical wiring.

Security is a critical consideration in today’s network landscape, and the XSR-3020 addresses this need with robust security features. It incorporates advanced access control capabilities, enabling administrators to segment traffic and enforce policies effectively. The switch also supports 802.1X authentication, ensuring that only authorized devices can connect to the network.

In terms of management, the XSR-3020 is designed to simplify operations through its user-friendly interface and extensive support for management protocols. It offers native support for Simple Network Management Protocol (SNMP) and can be easily integrated with various network management systems, allowing for efficient monitoring and troubleshooting.

Another key characteristic of the XSR-3020 is its reliability. With features such as redundant power supplies and fans, the switch ensures high availability, minimizing downtime for critical applications. It is also built to withstand harsh conditions, making it suitable for diverse environments.

Overall, the Enterasys Networks XSR-3020 combines high performance, scalability, and security, making it an excellent choice for organizations looking to enhance their network infrastructure. Its comprehensive set of features positions it as a reliable backbone for any modern enterprise network, ensuring that businesses can operate efficiently and securely.