Dsl Settings; Ipsec Vpn - TP-Link Archer D2 User Manual

Archer D2 AC750 Wireless Dual Band Gigabit ADSL2+ Modem Router User Guide
IPSec Pass-through: IPSec (Internet Protocol security) is a suite of protocols for
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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.
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TFTP ALG: To allow TFTP clients and servers to transfer data across NAT, click
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Enable.
H323 ALG: To allow H323 clients and servers to transfer data across NAT, click
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Enable.
SIP ALG: To allow SIP clients and servers to transfer data across NAT, click Enable.
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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.
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.
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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.
Figure 4-20
Figure 4-21
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