TP-Link Archer D9 Archer D9 V1 User Guide - Page 44

DSL Settings, IPSec VPN

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Arche r D9 AC1900 Wire le ss Dual Band Gigabit ADSL2+ M ode m Router Use r Guide • L2TP Pass-through: L2TP (Layer Two Tunneling Protocol) is the method used to enable Point-to-Point sessions via the Internet on the Layer Two level. To allow L2TP tunnels to pass through the modem router, click Enable. • IPSec Pass-through: IPSec (Internet Protocol security) 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 modem router, click Enable.  Application Layer Gateway (ALG): It is recommended to enable ALG (Application Layer Gateway) 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 etc. • FTP ALG: To allow FTP clients and servers to transfer data across NAT, click Enable. • TFTP ALG: To allow TFTP clients and servers to transfer data across NAT, click Enable . • H323 ALG: To allow H323 clients and servers to transfer data across NAT, click Enable . • SIP ALG: To allow SIP clients and servers to transfer data across NAT, click Enable. Click the Save button to save your settings. 4.5.7 DSL Settings Choose "Advanced Setup""DSL Settings", you can select the DSL Modulation Type and the Annex Type in the next screen. The DSL settings can be changed when you meet the physical connection problem. Please check the proper settings with your Internet service provider. Figure 4-20  DSL Modulation Type: Select the DSL operation Modulation Type which your DSL connection uses.  Annex Type: Select the DSL operation Annex Type which your DSL connection uses. Click the Save button to save your settings. 4.5.8 IPSec VPN Choose "Network""IPSec VPN", you can Add/Remove or Enable/Disable the IPSec tunnel connections on the screen as shown in Figure 4-21. 33

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Archer
D9
AC1900 Wireless Dual Band Gigabit ADSL2+ Modem Router User Guide
•
L2TP Pass-through:
L2TP (Layer Two Tunneling Protocol) is the method used to
enable Point-to-Point sessions via the Internet on the Layer Two level. To allow L2TP
tunnels to pass through the modem router, click
Enable
.
•
IPSec Pass-through:
IPSec (Internet Protocol security) 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
modem router, click
Enable
.
Application Layer Gateway (ALG):
It is recommended to enable ALG (Application Layer
Gateway) 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 etc.
•
FTP ALG:
To allow FTP clients and servers to transfer data across NAT, click
Enable
.
•
TFTP ALG:
To allow TFTP clients and servers to transfer data across NAT, click
Enable
.
•
H323 ALG:
To allow H323 clients and servers to transfer data across NAT, click
Enable
.
•
SIP ALG:
To allow SIP clients and servers to transfer data across NAT, click
Enable
.
Click the
Save
button to save your settings.
4.5.7
DSL Settings
Choose “
Advanced Setup
”
“
DSL Settings
”, you can select the DSL Modulation Type and the
Annex Type in the next screen. The DSL settings can be changed when you meet the physical
connection problem. Please check the proper settings with your Internet service provider.
Figure 4-20
DSL Modulation Type:
Select the DSL operation Modulation Type which your DSL
connection uses.
Annex Type:
Select the DSL operation Annex Type which your DSL connection uses.
Click the
Save
button to save your settings.
4.5.8
IPSec VPN
Choose “
Network
”
“
IPSec VPN
”, you can Add/Remove or Enable/Disable the IPSec tunnel
connections on the screen as shown in Figure 4-21.
33