User's Manual

33
Configuring Internet access
SE681 WiMAX / engbt / SE681_FUG_EN_9 / Advanced_configuration.fm / 18.5.11
Schablone 2011_04_07
PPPoE pass-through
If you activate the PPPoE pass-through function, a PC in the network can connect to
the Internet via its own connection ID. The router puts this connection through.
Setting up DNS servers
DNS (Domain Name System) is a decentralised database on the Internet which allo-
cates clearly understandable Internet names (domains) to the actual addresses of PCs
and services (e.g. IP addresses). The DNS servers required for access to this database
are normally provided by your provider and do not have to be set up specially. But if
necessary you can change them here.
 Open the Advanced Settings tab and on the Internet menu select DNS Servers.
 Activate the Use custom DNS servers function and enter the IP addresses for your
Preferred DNS server and the Alternate DNS server.
Enabling or disabling the firewall
Your SE681 WiMAX comes with an integrated firewall, which protects your device and
network against unauthorised access from the Internet. If the firewall is enabled, your
device can identify certain events, e.g. suspicious incoming data packets from the Inter-
net, as attacks and avert them (hacker defence). Your device’s firewall is enabled by
default.
If you still want to disable the firewall:
 Open the Advanced Settings tab and on the Internet menu select Firewall.
 Disable the firewall.
Always on
This gives the users in your network a constantly active Internet connection.
Only choose this setting if your Internet tariff is not time-dependent.
If necessary you can terminate the Internet connection manually (
 page 24).
Connect on demand
The Internet connection is only established if an application, e.g. an Internet
browser or an e-mail program, requests it.
We urgently recommend that you leave the firewall of your SE681
WiMAX enabled, otherwise your network will no longer be protected
against hacker attacks from the Internet.