The next thing you should do is update the router to

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The next thing you should do is update the router to the latest firmware version. Even though the router might be brand new, the firmware update will fix bugs, security vulnerabilities, and might even add additional features.
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And finally, configure the router's firewall settings. Most SOHO routers will have an integrated firewall feature that blocks external attacks. Make sure the firewall is enabled and configured properly. The firewall can also be used to block specific services, such as torrent applications, that use up a lot of bandwidth. If the router also functions as a wireless access point, you should also change the default SSID, and configure authentication and encryption. For most SOHO environments, selecting WPA2 personal is the best wireless configuration. Connect the Router to the Internet 3:46-4:40 After you've selected the appropriate router and connected it either directly to the Internet or to the Internet modem, you need to configure it to connect to the Internet. The way this is done depends on the type of Internet connection and router you have selected. The most common method to establish an Internet connection is to configure the router to use DHCP. With DHCP, the router contacts the ISP's DHCP server, which provides the router with all the necessary configuration information, including IP address, subnet mask, and DNS server. Sometimes the ISP will provide you with this information, which you then need to manually configure on the router. This is known as static configuration. If the Internet service is DSL, you may have to configure the router to use PPPOE. PPPOE is a protocol, typically used by DSL providers, that allows them to regulate Internet access using username and password authentication. Network Address Translation (NAT) 4:41-7:13 After the Internet connection has been established, the next step is to allow hosts to connect to the network and obtain Internet access. To do this, the router uses a networking technique called network address translation, or NAT. Without NAT, every single device on this network would need to have a unique Internet IP address.The reason for this is because all sent and received packets need a source and destination IP address.Devices on the Internet need to know where data is coming from and where data should be sent, but remember, IP addresses are limited. Because of this, ISP's will only assign a single Internet IP address, also called a public IP address, to subscribers. So, what NAT does, is assign internal devices a private IP address, such as 10.0.0.1, and associates theprivate IP address with the public IP address used by the router. This allows for multiple devices to use the same public IP address. It works like this, using NAT, let's say this host visits a website. The request is sent to the router, with the website as the destination, and the host's private IP address as the source address. When the router receives this request, it does it does two things. First, it strips off the source address andreplaces it with the router's public IP address. If the private IP address was left, the request would never be returned.
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