A INPUT -p icmp -m state -state ESTABLISHED,RELATED -j ACCEPT A INPUT -p icmp -m state -state NEW -icmp-type 8 -j ACCEPT # to localhost that does not originate from lo. # Allow all loopback (lo) traffic and reject traffic Leaving IPv6 disabled here prevents leaking v6 traffic which would otherwise be sent separately from your VPN’s v4 tunnel. IPv6 was disabled since OpenVPN doesn’t support using both transport layers simultaneously. Part One of this series, we set iptables rules so the OpenVPN server could only accept client connections, SSH, and make system updates, all over IPv4. cat > /etc/openvpn/nf > /etc/openvpn/nf << END Set OpenVPN to push a gateway configuration, so all clients send internet traffic through it. Switch from your standard user account to the root user: sudo su - root OpenVPN’s server-side configuration file is: /etc/openvpn/nf, and requires editing to optimize its efficiency. If you found this page looking for information about VPN client device configuration, see Part Three:Ĭonfiguring OpenVPN Client Devices.
Set Up a Hardened OpenVPN Server with Debian. If you do not: complete part one of the series: The guide assumes that you already have an OpenVPN server running.
Private tunnel free internet series#
This guide is the second-part of a three-part series on setting up a hardened OpenVPN environment. Commonly, a VPN tunnel is used to privately access the internet, evading censorship or geolocation by shielding your computer’s web traffic when connecting through untrusted hotspots, or connections.
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