Linksys WRT 1900AC

WRT 900AC | Setting Up: Advanced 37
HOW TO EXPOSE A DEVICE TO THE INTERNET
If you are operating a Web server, a mail server, or a Web camera, you may want to
expose that device to the Internet so anybody can access it. Your router includes
aDMZ(DemilitarizedZone)featurethatforwardsallinboundportspresentedon
the WAN interface, except those that are specifically forwarded, to an individual
IP address or MAC address. This feature is normally not used, because it presents
significantsecurityriskstothedevicethatyoudesignatefortheDMZ.TheDMZ
device is not protected by the built-in firewalls, Internet filters, or router Web
filters, and is open to attacks from hackers.
A much safer way of exposing devices to the Internet would be to use port
forwarding. See “How to set up port forwarding” on page 39.
To set up a device in the DMZ, do the following:
• ConfigureyourdevicewithastaticIPaddress.Seeyourdevice’sdocumentation
for help with setting a static IP address or use DHCP reservation (see “How to set
up the DHCP server on your router” on page 27).
• LogintoLinksysSmartWi-Fi.(See“HowtoconnecttoLinksysSmartWi-Fi”on
page .)
• UnderRouter Settings, click Security, then click the DMZ tab.
• ClickthesettingforDMZ to turn it on.
To use their DNS:
• LogintoLinksysSmartWi-Fi.(See“HowtoconnecttoLinksysSmartWi-Fi”on
page .)
• UnderRouter Settings, click Connectivity.
• ClicktheLocal Network tab.
• CompletetheStatic DNS fields with the information provided by your content
filtering provider.
• ClickOK.
TO EXTEND YOUR NETWORK
This topic covers cases three and four above.
Note:
This is a complex process, so this procedure assumes that you have some
networking knowledge.
To extend your network or add wireless capabilities, do the following:
• Ifyouwanttoextendyournetwork,youmayalsofollowtheinstructionsabove.
One example of this might be to provide a separate wireless network for your
children to keep their wireless network traffic separate from your wireless network.
You might also want to isolate one network from another network so that network
shares aren’t visible across networks. In this case, use an Ethernet cable to connect
the Internet port of the downstream router to one of the LAN ports of the upstream
router. Make sure that the local network subnets on the two routers are different.
- OR -
• Youcanextendyournetworkbyturningthedownstreamrouterintoanaccess
point. (See “How to use a router as an access point” on page 34.) When you use
a router as an access point, computers connected to the access point are on the
same IP subnet as all other devices connected to the router. File, printer, and
media sharing is much easier if all devices are on the same subnet.