Translate Address And Port By Alg - TP-Link HC220 User Manual

Chapter 10

10. 1. 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 etc. Enabling ALG is
recommended.
Visit http://tplinkwifi.net, and log in with the password you set for the AP. Go to
> NAT Forwarding > ALG.
• PPTP Pass-through:
through an IP network and passed through the AP.
• L2TP Pass-through:
through an IP network and passed through the AP.
• IPSec Pass-through:
tunneled through an IP network and passed through the AP. 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.
• RTSP ALG: If selected, it allows media player clients to communicate with streaming
media servers via NAT.
• SIP ALG: If enabled, it allows clients communicate with SIP (Session Initiation Protocol)
servers via NAT.
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 be
NAT Forwarding
Advanced
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