Linksys BEFSX41 manual Other Settings, Password

Instant Broadband® Series

Phase 2

Group

There are two Diffie-Hellman Groups to choose from: 768-bit and 1024-bit. Diffie-Hellman refers to a cryptographic technique that uses public and private keys for encryption and decryption.

Key Lifetime

In the Key Lifetime field, you may optionally select to have the key expire at the end of a time period of your choosing. Enter the number of seconds you’d like the key to be used until a re-key negotiation between each endpoint is completed.

Other Settings

NetBIOS broadcast

Check the box next to NetBIOS broadcast to enable NetBIOS traffic to pass through the VPN tunnel.

Anti-replay

Check the box next to Anti-replay to enable the Anti-replay protection. This feature keeps track of sequence numbers as packets arrive, ensuring security at the IP packet-level.

Keep-Alive

Check the box next to Keep-Alive to re-establish the VPN tunnel connection whenever it is dropped. Once the tunnel is initialized, this feature will keep the tunnel connected for the specified amount of idle time.

Unauthorized IP Blocking

Check this box to block unauthorized IP addresses. Complete the on-screen sentence to specify how many times IKE must fail before blocking that unau- thorized IP address for a length of time that you specify (in seconds).

EtherFast® Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint

Password

Figure 7-26

The Password screen, shown in Figure 7-26, allows you to change the password, set SNMP Community names, enable UPnP Services, and restore default set- tings on the Router.

Router Password It is strongly recommended that you set a password for the Router. The default password is admin. If you don’t change the password, all users on your network will be able to access the Router using the default pass- word admin.

SNMP Community Each SNMP Community field allows a name to be assigned to any SNMP community that has been set up in the network. Four different communities can be defined, including the two default communities, public and private. For each SNMP Community name, you can configure each community’s accessibility, making it either Read-Onlyor Read-Write.

Restore Factory Defaults If you select the Restore Factory Defaults option and click the Apply button, you will clear all of the Router’s settings.

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