Manage the WAN and LAN Network Settings
N600 and AC750 WiFi DSL Modem Routers
Manage IGMP Proxying and VPN Pass-Through
IGMP proxying allows a computer on the local area network (LAN) to receive the multicast
traffic it is interested in from the Internet. If you do not need this feature, leave it disabled,
which is the default setting.
When Network Address Translation (NAT) is enabled in the modem router (see Manually Set
Up the Internet Connection on page 44), it filters encrypted tunnel packets through NAT,
causing these packets to become invalid. VPN pass-through allows encrypted tunnel packets
to go through without being filtered and is enabled by default for IPSec, PPTP, and L2TP
packets. Do not disable VPN pass-through for IPSec, PPTP, or L2TP unless a specific reason
To change the default IGMP proxying and VPN pass-through settings:
1. Launch an Internet browser from a computer or WiFi device that is connected to the
2. Type http://www.routerlogin.net.
A login screen displays.
3. Enter the user name and password for the modem router.
The user name is admin. The default password is password. The user name and
password are case-sensitive.
4. Click the OK button.
The BASIC Home screen displays.
5. Select ADVANCED > Setup > WAN Setup.
The WAN Setup screen displays.
6. To enable IGMP proxying, clear the Disable IGMP Proxying check box.
By default, the Disable IGMP Proxying check box is selected and IGMP proxying is
7. To disable VPN pass-through for one or more protocols, select the corresponding Disable
radio buttons in the VPN Passthrough section.
By default, the VPN pass-through is enabled for all protocols for which the modem router
supports pass-through (IPSec, PPT, and L2TP).
8. Click the Apply button.
Your settings are saved.
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