User's Manual

Networking
Configuring the WAN
Cisco ISA500 Series Integrated Security Appliance Administrator Guide 108
4
PPPoE PPPoE uses Point to Point Protocol over Ethernet (PPPoE) to
connect to the Internet. The PPPoE protocol is typically found
when using a DSL modem. Choose this option if your ISP
provides you with client software, user name, and password.
Use the necessary PPPoE information from your ISP to
complete the PPPoE configurations. You can predefine multiple
PPPoE profiles before you set the network addressing mode as
PPPoE.
• Profile Name: Choose an existing PPPoE profile. The
User Name, Password, Authentication Type, and
Connectivity Type settings of the selected PPPoE profile
are displayed. You can edit the settings of the selected
PPPoE profile, or create a new PPPoE profile by choosing
Create a PPPoE Profile. See Configuring the PPPoE
Profiles, page 111.
• User Name/Password: Enter the user name and
password that are required to log into the ISP.
• Authentication Type: Choose the authentication type
specified by your ISP.
• Connect Idle Time: Choose this option to let the security
appliance disconnect from the Internet after a specified
period of inactivity (Idle Time). This choice is
recommended if your ISP fees are based on the time that
you spend online.
• Keep Live: Choose this option to keep the connection
always on, regardless of the level of activity. This choice
is recommended if you pay a flat fee for your Internet
service.
• MTU: Choose Auto to use the default MTU size, or
choose Manual if you want to specify another size.
• MTU Value: If you choose Manual, enter the custom MTU
size in bytes.
NOTE Unless a change is required by your ISP, it is recommended
that the MTU values be left as is.
Network
Addressing
Mode
Configurations