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Do I need to configure my router/firewall to use your proxy?
You should not need to open any ports or adjust your firewall settings to establish VPN connections. OpenVPN utilizes port 443 and PPTP uses port 1723; these ports are open by default for most systems. However, your ISP must allow GRE protocol for you. Nevertheless, in most cases you won't experience any problems connecting to our VPN server from any place.