Generate Master Encryption Key

VPN Site-to-Site Sample Configuration

If you have not already generated a master encryption key, you must do so now to configure the VPN. A master key need only be generated once.

Caution: The master encryption key is stored in hardware, not Flash, and you cannot read the key - only overwrite the old key by writing a new one. To ensure router security, it is critical not to compromise the key. There are situations where you may want to keep the key, for example, to save the user database off-line in order to later download it to the XSR. In order to encrypt the user database, you need the same master key, indicating the key designation with the master key specify command. Be aware that if the XSR is inoperable you may have to return to factory defaults, which erases the master key forcing you to generate a new one.

Generate the master key:

XSR(config)#crypto key master generate

New key is 2173 4521 3764 2ff5 163b 4bdf fe92 dbc1 1232 ffe0 f8d9 3649

Configure Access Control Lists

ACL 101 configured below is strongly restrictive in denying all but IKE traffic (well-knownACL #

500)through the router. ACLs 190, 191, and 192 are crypto map filters configured to accept any IPSec-encrypted traffic over site-to-site tunnels and pass that traffic to the three specified networks only.

XSR(config)#access-list 101 permit udp any any eq 500

XSR(config)#access-list 101 permit udp esp any any

XSR(config)#access-list 101 permit udp ah any any

XSR(config)#access-list 101 deny ip any any

XSR(config)#access-list 190 permit ip any 112.16.72.0 0.0.0.255

XSR(config)#access-list 191 permit ip any 112.16.76.0 0.0.0.255

XSR(config)#access-list 192 permit ip any 112.16.80.0 0.0.0.255

Set Up IKE Phase I Security

The following proposal sets pre-shared authentication and MD5 hashing:

XSR(config)#crypto isakmp proposal acme

XSR(config-isakmp)#authentication pre-share

XSR(config-isakmp)#hash md5

Configure IKE Policy for Remote Peer

The following proposal specifies the XSR’s remote peer IP address as any peer matching its IKE policy, sets NAT to automatically detect routers performing NAT between tunnel endpoints and directs the XSR to switch on UDP encapsulation when found.

It also designates the peer as a gateway which will initiate the configuration mode in terms of IKE negotiation:

XSR(config)#crypto isakmp peer 0.0.0.0 0.0.0.0

XSR(config-isakmp-peer)#proposal acme

XSR(config-isakmp-peer)#config-mode gateway

XSR(config-isakmp-peer)#nat-traversal automatic

XSR Getting Started Guide 3-27

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.