Also set a new password for the (WAP)router and plug it into the switch. A router is operated on three layers of the OSI model Physical, Datalink, and Network layer, where the Modem is operated on the Data link layer only. Some routers, like the Cisco ISR 4000 series, offer advanced firewall settings that allow you to customize the level of security. Ensure this is enabled, as the firewall acts as a barrier between your internal network and potential external threats. Set the WAP to no DHCP, LAN address 192.168.42.10, gateway 192.168.42.1, netmask to 255.255.255.0, your wireless encryption to WPA2, and a long messy password for the wireless. In the security settings, you will see an option for the firewall. Set the LAN address of the router to 192.168.42.1, the netmask to 255.255.255.0, the DCHP range to 192.168.42.101 through 192.168.42.151 (or higher if you need more, but that seems unlikley), your wireless encryption to WPA2, and a long messy password for the wireless. So, for a concrete example with numbers (which are not cast in stone, but will work): pick 192.168.42.0/24 as your network, and think fondly of Douglas Adams. Some can actually be told that you are using them as a WAP, the rest work just fine if nothing is plugged into the WAN, they have an address of their own, and DHCP is turned off. It needs a unique LAN IP address in the correct range, and whatever wireless settings you'll set. Plug between the/a LAN port and the Switch. The major difference between router and firewall is that the router is a hardware to provide connections to various devices. Arris promises download speeds up to 1Gbps and Wi-Fi speeds up to 2350Mbps for this modem, making it a good addition to homes subscribing to broadband plans with speeds of 600Mbps or less. This is why routers have two IP addresses. A simple four-port wireless router has two network interface cards (NIC)one connects to the WAN port running out to the modem, and one or multiple internal NICs for the ports and wireless antennas. The router that you want to use only as a WAP should NOT have anything plugged into the WAN port, and should NOT have DHCP enabled. So, like a gateway modem, a router regulates network traffic between two or several separate networks. If you are using two routers, but want only one to act as the router while the other acts as a WAP (only) but is not a dedicated WAP (if you already happen to have two wireless routers - otherwise, buy a WAP if you are buying) the one acting as a router would be set up normally - you might or might not want to veer away from defaults a bit (ie, there are many, many private NAT networks - not all of them need to be 192.168.1.0 - there's plenty of options other than that particular one, but it's a common default.) A router is a device in a computer that moves data back and forth between networks.
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