150Mbps Wireless ADSL2+ Router
User Manual
48
4.8.5.
IGMP Snooping
Choose menu “
Application & Games→
IGMP Snooping
”, you can enable or disable IGMP
snooping function in the screen as shown below.
Status
: IGMP (Internet Group Multicast Protocol) is a session-layer protocol used to establish
membership in a multicast group. The ADSL ATU-R supports both IGMP version 1 (IGMP v1)
and IGMP v2. Select “Enable” to enable the IGMP Snooping function if you need.
4.9. Applications Gateway
4.9.1. VPN Pass-through
Choose menu “
Applications Gateway→
VPN Pass-through
”, you can enable or disable the VPN
Pass-through function in the screen as shown below.
VPN is commonly used for encapsulate and encrypt data across the public network. For VPN tunnel,
the router supports IPSEC pass-through, PPTP pass-through and L2TP pass-through.
PPTP Pass-through:
PPTP means the "Point to Point Tunneling Protocol", select "enable" to
allow PPTP pass-through the router.
L2TP Pass-through:
PPTP means the "Point to Point Tunneling Protocol", select "enable" to
allow PPTP pass-through the router.
IPSEC Pass-through:
IPSEC (Internet Protocol Security) is a suite of protocols used to
implement secure exchange; select "enable" to allow IPSEC pass-through the router.
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