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Chapter 5: Setting Up and Configuring the Router
VPN Tab - VPN Pass Through
10/100/1000 4-Port VPN Router
Compress (Support IP Payload compression Protocol (IP Comp)
The Router supports IP Payload Compression Protocol. IP Payload Compression is a protocol to reduce the size of
IP datagrams. If Compress is enabled, the Router will propose compression when initiating a connection. If the
responders reject this propose, the Router will not implement the compression. When the Router works as a
responder, the Router will always accept compression even without enabling compression.
Keep-Alive: This mechanism helps to keep up the connection of IPSec tunnels. Whenever a connection is
dropped and detected, it will be re-established immediately.
AH Hash Algorithm: AH (Authentication Header) protocol describes the packet format and the default standards
for packet structure. With the use of AH as the security protocol, protected is extended forward into IP header to
verify the integrity of the entire packet by use of portions of the original IP header in the hashing process. There
are two algorithms, MD5 and SHA1. MD5 produces a 128-bit digest to authenticate packet data and SHA1
produces a 160-bit digest to authenticate packet data.
NetBIOS broadcast: Check the box to enable NetBIOS traffic to pass through the VPN tunnel. By default, RV0041
blocks these broadcasts.
Click the Save Settings button when you finish the settings or click the Cancel Changes button to undo the
changes.
VPN Tab - VPN Pass Through
IPSec Passthrough: IPSec (Internet Protocol Security) is a suite of protocols used to implement secure
exchange of packets at the IP layer. To allow IPSec Passthrough, click the Enabled button. To disable IPSec
Passthrough, click the Disabled button.
PPTP Pass Through: PPTP (Point-to-Point Tunneling Protocol) Passthrough allows the Point-to-Point (PPP) to be
tunneled through an IP network. To allow PPTP Passthrough, click the Enabled button. To disable PPTP
Passthrough, click the Disabled button.
L2TP Passthrough: Layer 2 Tunneling Protocol Passthrough is the method used to enable Point-to-Point
sessions via the Internet on the Layer 2 level. To allow L2TP Passthrough, click the Enabled button. To disable
L2TP Passthrough, click the Disabled button.
Figure 5-48: VPN tab - VPN Pass Through