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Firewall
VPN Passthrough
Virtual Private Network (VPN) passthrough lets authorised remote clients
log onto VPN servers on your LAN and join the LAN as though they were
locally connected. Strong encryption is normally used to make the remote
link secure. Your broadband gateway is set by default to allow four types of
VPN connections: IP Security (IPSec), Point-to-Point Protocol over Ethernet
(PPPoE), Point-to-Point Tunneling Protocol (PPTP), and Layer 2 Tunneling
Protocol (L2TP). You can leave passthrough of each enabled, or disable it,
according to your needs.
Firewall
Several kinds of additional dangers and annoyances can be blocked by
putting a check in the corresponding check box.
◘ Proxy servers on the Internet are sometimes used by attackers to hide their
location and identity.
◘ Cookies are records that some Web sites place on a user’s computer and
read back when the user again visits the site. They usually contain viewing
preferences, but they can also contain a user’s browsing or purchasing his-
tory.
◘ Java applets are small programs sent by Web sites and run under the con-
trol of a browser. They run in their own windows, and can potentially access
local disks and network connections.
◘ ActiveX is a programming language for Microsoft Windows that, like Java,
is used by some Web sites to create animated and interactive content. These
“ActiveX controls” also can potentially access local disks and network connec-
tions.
Some Web sites rely heavily on cookies, Java, or ActiveX, and may be partially
or completely inaccessible if any of these are blocked.