Figure 4-21: Intrusion Detection; Figure 4-22: Vpn Passthrough - Linksys AM300 User Manual

ADSL Modem
Intrusion Detection
This screen allows common hacker attacks to be blocked. All of these types of intrusions are blocked by default.
If you want to allow the traffic for a service through, check the box for the desired service.
Intrusion Detection Features include RIP defect and Discard Ping to WAN.
Stateful Packet Inspection features include SPI and Anti-DoS firewall protection, Packet Fragmentation, TCP
Connection, UDP Session, FTP Service, H.323 Service, and TFTP Service.
Alert
• Your E-mail Address. Enter the e-mail address that will receive alert logs in the field.
• SMTP Server Address. Enter the IP address of the SMTP server in the field.
• SMTP User Name. Enter the user name used to login to the SMTP server.
• SMTP Password. Enter the password used to login to the SMTP server.
VPN
Virtual Private Networking (VPN) is a security measure that creates a secure connection between two remote
locations. The VPN screen allows you to configure your VPN settings to make your network more secure. Use the
settings on this tab to allow VPN tunnels using IPSec, L2TP, or PPTP protocols to pass through the Modem's
firewall.
VPN Passthrough
• IPSec Passthrough. Internet Protocol Security (IPSec) is a suite of protocols used to implement secure
exchange of packets at the IP layer. To allow IPSec Passthrough, click the Enabled option. To disable IPSec
Passthrough, click the Disabled option.
• L2TP Passthrough. Layering 2 Tunneling Protocol Passthrough is an extension of the Point-to-Point Tunneling
Protocol (PPTP) used to enable the operation of a VPN over the Internet. To allow L2TP Passthrough, click the
Enabled option. To disable L2TP Passthrough, click the Disabled option.
• PPTP Passthrough. Point-to-Point Tunneling Protocol Passthrough is the method used to enable VPN sessions
to a Windows NT 4.0 or 2000 server. To allow PPTP Passthrough, click the Enabled option. To disable PPTP
Passthrough, click the Disabled option.
Chapter 4: Configuring the ADSL Modem
The Security Tab

Figure 4-21: Intrusion Detection

Figure 4-22: VPN Passthrough

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