I'd like to allow a houseguest to use my CenturyLink DSL without compromising the security of my LAN, and without any additional hardware. Setting up a second SSID seems like the best way to do this, but I'm a bit uncertain about some parts of the configuration. I have activated a second "guest" SSID and set the bandwidth limitation. I have the option to "Set SSID in Separate Subnet" which makes sense, to avoid IP conflicts. I have set the DHCP start and end addresses to, for example, 192.168.88.1 and 192.168.88.254, but am uncertain what values would go in the "SSID Subnetmask" and "Gateway Address" fields. There is also an option to "Select SSID URL redirect." I'd appreciate any other suggestions that would help make this setup more secure.
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