Translate Address And Port By Alg - TP-Link TL-MR100 User Manual

Chapter 9
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Translate Address and Port by ALG

ALG (Application Layer Gateway) allows customized NAT (Network Address Translation)
traversal filters to be plugged into the gateway to support address and port translation
for certain application layer "control/data" protocols: FTP, TFTP, H323 etc. Enabling ALG
is recommended.
1 Visit http://tplinkmodem.net, and log in with the password or your TP-Link ID.
2 Go to Advanced
Note: It is recommended to keep the default settings.
• PPTP Pass-through:
through an IP network and passed through the router.
• L2TP Pass-through:
through an IP network and passed through the router.
• IPSec Pass-through:
be tunneled through an IP network and passed through the router. IPSec uses
cryptographic security services to ensure private and secure communications over
IP networks.
• FTP ALG: If enabled, it allows FTP (File Transfer Protocol) clients and servers to transfer
data via NAT.
• TFTP ALG: If enabled, it allows TFTP (Trivial File Transfer Protocol) clients and servers
to transfer data via NAT.
• H323 ALG: If enabled, it allows Microsoft NetMeeting clients to communicate via NAT.
• SIP ALG: If enabled, it allows clients communicate with SIP (Session Initiation Protocol)
servers via NAT.
• RTSP ALG: If enabled, it allows RTSP (Real-Time Stream Protocol) clients and servers
to transfer data via NAT.
> NAT Forwarding > ALG.
If enabled, it allows Point-to-Point sessions to be tunneled
If enabled, it allows Layer 2 Point-to-Point sessions to be tunneled
If enabled, it allows IPSec (Internet Protocol Security) to
NAT Forwarding
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