How can I configure a Linode as a proxy?
Linode VPN Guides
You can follow the docs linked below for instructions on configuring a Linode VPN.
If you are attempting to bypass the Great Firewall of China (GFW), you may want to consider some other basic VPN and proxy connections as well.
In some cases, some of the basic services are still actively filtered by the GFW. In this case, you may want to consider working with some of the specialized services configured to specifically address the difficulties of the GFW. For your convenience, I've laid out multiple VPN/Proxies below.
OpenVPN with SSH tunneling -
https://www.vpnanswers.com/openvpn-over-ssh-tunnelling-tutorial-step-by-step/ (with PuTTY)
http://blog.acmelab.org/2008/07/20/mac-os-x-openvpn-bridge-ssh-tunnel-vpn-goodness/ (with Mac OSX)
https://github.com/StreisandEffect/streisand (easy setup of stunnel, tor, shadowsocks, ovpn)
ShadowsocksR - (shadowsocks with additional obfuscation making it harder to detect.)
Firefly - (A proxy software to help circumventing the Great Firewall.)
Wireguard - (a newer VPN protocol)
Another alternative users have experienced success with, is utilizing their Linode’s IPv6 address. This is located in your Linode’s Remote Access tab. While users have reported connectivity issues with their IPv4 addresses they’ve still been able to access their server via IPv6.