It is often the case that a system behind the firewall needs to be able to access a remote network through Virtual Private Networking (VPN). The two most common means for doing this are IPsec and PPTP. The basic setup is shown in the following diagram: A system with an RFC 1918 address needs to access a remote network through a remote gateway.
tunnels - Shorewall VPN definition file SYNOPSIS /etc/shorewall/tunnels DESCRIPTION The tunnels file is used to define rules for encapsulated (usually encrypted) traffic to pass between the Shorewall system and a remote gateway. Traffic flowing through the tunnel is … routing - Shorewall: VPN clients can access LAN resources After some time, I successfully set up OpenVPN with Shorewall to grant VPN clients access to selected LAN servers. But for some reason, VPN clients can't access Internet at all. Here's my Shorewall setup: I set up my three zones in zones, interfaces and host files. zones. #ZONE TYPE fw firewall net ipv4 loc:net ipv4 vpn ipv4 interfaces OpenVPN - Debian Wiki
Ubuntu Manpage: tunnels - Shorewall VPN definition file
The shell-based compiler is retired. With Shorewall 4.4, there are five packages: Shorewall -- Includes everything needed to create an IPv4 firewall. Shorewall6 -- Requires the Shorewall package and adds the capability to create an IPv6 firewall.
Setting up the firewall to allow PPTP VPN dialup client (e.g. Ubuntu's NetworkManager) to use protocol GRE is just a few steps in adding rules and interfaces. This post is based on the previous post " How to set up Shorewall firewall (alternate to FireStarter) ", which is a quick tutorial on setting up Shorewall firewall on a single network
Windows Server 2012 R2 PPTP VPN Disconnection - Spiceworks Jul 23, 2020 In Shorewall version 4.4.*, the Shorewall-common, Shorewall-shell and Shorewall-perl packages are discontinued and replaced with a single Shorewall package which combines the functions of Shorewall-common and Shorewall-perl. The shell-based compiler is retired. With Shorewall 4.4, there are five packages: Read about the Shorewall 5.0, 5.1 and 5.2 releases here! Get them from the download sites. What is Shorewall? Shorewall is a gateway/firewall configuration tool for GNU/Linux. For a high level description of Shorewall, see the Introduction to Shorewall. To review Shorewall functionality, see the Features Page. Getting Started with Shorewall Jul 12, 2013 · The central VPN gateway/firewall is running strongSwan VPN and Shorewall firewall on Linux. It could be Debian, Fedora or Ubuntu. Other open source platforms such as OpenBSD are also very well respected for building firewall and VPN solutions, but Shorewall, which is one of the key ingredients in this recipe, only works on Linux at present. Jan 03, 2012 · Edit /etc/default/shorewall and set 'startup=1' Shorewall Configuration Files. Within /etc/shorewall, these files are of importance for a basic router: interfaces masq modules policy rules shorewall.conf zones. All other files can be ignored or deleted. The samples are duplicated in /usr/share/doc Shorewall uses zones as a way of defining different portions of our network. Our simple example will have three zones: internet, dmz, and local. Shorewall can easily be extended to support many more zones such as a DMZ or a VPN zone. This configuration is performed in /etc/shorewall/zones: Firewall:~# nano -w /etc/shorewall/zones