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A common issue I’ve run into on public access Wi-Fi is web content filtering. While it is great places offer guest Wi-Fi, I don’t care for being restricted to what I can or cannot look at while connected. So in that case an easy solution is to change the DNS server your device is resolving to and bypass any DNS filters and blocks the guest Wi-Fi service may have.  Other options include remote access of another computer else where (like your home computer if doing sensitive transactions), or a VPN connection.

As DNS settings are generally easy to edit and Google has an easy to remember DNS servers I use them regularly. These can be set on your devices or even in your router. For the purpose of this article I have included steps for Android and Windows 7.

Google Public DNS IP addresses (IPv4):
8.8.8.8
8.8.4.4

Google Public DNS IP addresses (IPv6):
2001:4860:4860::8888
2001:4860:4860::8844

Setting the DNS on an Android device is fairly straight forward; just go to Wi-Fi settings, tap and hold on the network after connecting then select Modify Network. On the screen that appears check the box to display advanced settings and change IP settings to Static. Once on the IP settings screen just replace the DNS servers with the Google ones (Conveniently on Android when you erase the DNS servers, Google’s pre-populate).
Android Network Settings

On Windows it is a few more clicks but still easily set. Just go to the Control Panel and select Network Sharing Center. Then click the option Change Adapter Settings. Right-Click adapter to change (wireless) and select the properties option. Double click on the IPv4 then enter Google’s DNS server settings.
Win7 Network Settings