Page
48
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Middletown, PA 17057
Inc All Rights Reserved.
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Firewall -
A firewall protects your network from the outside world. Here you can enable or disable
the Router’s firewall.
SPI Firewall -
SPI (Stateful Packet Inspection, also known as dynamic packet filtering) helps
to prevent cyber attacks by tracking the states within a session. It validates that the traffic
passing through the session conforms to the protocol. SPI Firewall is enabled by factory
default. If you want all the computers on the LAN exposed to the outside world, you can
disable it.
VPN -
VPN Passthrough must be enabled if you want to allow VPN tunnels using IPSec, PPTP,
or L2TP protocols to pass through the Router’s firewall.
PPTP Passthrough -
Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point
Protocol (PPP) to be tunneled through an IP network. To allow PPTP tunnels to pass through
the Router, keep the default,
Enabled
.
L2TP Passthrough
-
Layer 2 Tunneling Protocol (L2TP) is the method used to enable Point-
to-Point sessions via the Internet on the Layer 2 level. To allow L2TP tunnels to pass through
the Router, keep the default,
Enabled
.
IPSec Passthrough
-
Internet Protocol Security (IPSec) is a suite of protocols for ensuring
private, secure communications over Internet Protocol (IP) networks, through the use of
cryptographic security services. To allow IPSec tunnels to pass through the Router, keep the
default,
Enabled
.
ALG -
It is recommended to enable Application Layer Gateway (ALG) because ALG allows
customized Network Address Translation (NAT) traversal filters to be plugged into the gateway to
support address and port translation for certain application layer "control/data" protocols such as
FTP, TFTP, H323 etc.
FTP ALG -
To allow FTP clients and servers to transfer data across NAT, keep the default
Enable
.
TFTP ALG -
To allow TFTP clients and servers to transfer data across NAT, keep the default
Enable
.
H323 ALG -
To allow Microsoft NetMeeting clients to communicate across NAT, keep the
default
Enable
.
RTSP ALG
- To allow some media player clients to communicate with some streaming media
servers across NAT, click Enable.
Click the
Save
button to save your settings.