strongSwan as a Remote Access VPN Client (Xauth) That Connects to Cisco IOS Software - Configuration Example
- Introduction. This document describes how to configure strongSwan as a remote access IPSec VPN client that connects to...
- Prerequisites. The information in this document was created from the devices in a specific lab environment. All of the...
Full Answer
Can strongSwan be used with Cisco IOS software?
It is also possible to configure an IPSec LAN-to-LAN tunnel between Cisco IOS software and strongSwan. Additionally, IKEv2 between both devices works correctly both for remote and LAN-to-LAN access.
Does strongSwan VPN work with IKEv2?
strongSwan VPN Client for Android 4 and newer The free strongSwan App can be downloaded from Google Play. The VPN client supports IKEv2 only with EAP-MD5 or EAP-MSCHAPv2 password-based, or certificate based user authentication and certificate-based VPN gateway authentication. strongSwan 5.x with Single Monolithic IKEv1 / IKEv2 Daemon
What IP address does strongSwan propose for the external gateway?
Without rightsubnet defined, strongSwan proposes an external gateway (Cisco IOS software) IP address in phase2 of the negotiation; in this scenario, that gateway is 10.48.67.167.
What is the IPsec Security Association (SA) for strongSwan?
In this scenario, the IPSec security association (SA) is built between 192.168.1.0/24 (on Cisco IOS software) and the strongSwan IP address, which is received from pool 10.10.0.0/16. Without rightsubnet specified, you might expect to have the 0.0.0.0 network and the IPSec SA between the client IP address and the 0.0.0.0 network.
How do I connect to strongSwan VPN?
The steps are the same or very similar.Start by opening the Play Store.Enter “strongswan” in the search field, tap on “strongSwan VPN Client” in the search results list.Once you are on the application's page, tap “Install” button.Then you will see the permissions window, tap “Accept”.More items...
What is strongSwan used for?
strongSwan is a complete IPsec solution providing encryption and authentication to servers and clients. strongSwan can be used to secure communications with remote networks, so that connecting remotely is the same as connecting locally. The gateway is usually your firewall but this can be any host within your network.
What is strongSwan server?
strongSwan is an open-source, cross-platform, full-featured, and widely-used IPsec-based VPN (Virtual Private Network) implementation that runs on Linux, FreeBSD, OS X, Windows, Android, and iOS.
How do I get IKEv2 VPN?
Use the IKEv2 Setup Wizard(Fireware v12. 3 or higher) Select VPN > Mobile VPN.In the IKEv2 section, select Configure. The Mobile VPN with IKEv2 page appears.(Fireware v12. 2.1 or lower) Select VPN > Mobile VPN with IKEv2. ... Click Run Wizard.Click Next.Type the domain name or IP address for client connections.
Is strongSwan open source?
strongSwan is a multiplatform IPsec implementation....strongSwan.Developer(s)Andreas Steffen, Martin Willi & Tobias BrunnerWritten inCOperating systemLinux, Android, Maemo, FreeBSD, macOS, WindowsTypeIPsecLicenseGNU General Public License5 more rows
What is the difference between Openswan and strongSwan?
Libreswan is the project the Openswan developers created after the company they had originally founded to develop Openswan sued them over the trademark. So Libreswan is what we will discuss here. The most obvious differences are: StrongSwan has much more comprehensive and developed documentation than Libreswan.
Which is better IPsec or OpenVPN?
IPSec with IKEv2 should in theory be the faster than OpenVPN due to user-mode encryption in OpenVPN however it depends on many variables specific to the connection. In most cases it is faster than OpenVPN. When used in its default UDP mode on a reliable network OpenVPN performs similarly to IKEv2.
How do I start strongSwan service?
A root password configured on your server.Step 1 – Create an Atlantic.Net Cloud Server. ... Step 2 – Enable Kernel Packet Forwarding. ... Step 3 – Install strongSwan. ... Step 4 – Setting Up a Certificate Authority. ... Step 5 – Configure strongSwan. ... Step 6 – Configure Authentication. ... Step 7 – Install and Configure strongSwan Client.
What is the use of L2TP?
Layer Two Tunneling Protocol (L2TP) is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by internet service providers (ISPs) to enable virtual private networks (VPNs).
Which is better IKEv2 or IPSec?
IPSec is considered secure and reliable, while IKEv2 is extremely fast and stable – IKEV2 offers quick re-connections when switching networks or during sudden drops. Thus, a combination of IKEv2/IPsec forms one of the best VPN protocols that exhibits the advantages of the two.
Is IKEv2 more secure than OpenVPN?
On a positive note, IKEv2 is widely-considered to be among the fastest and most secure protocols available, making it a popular choice with VPN users. Performance: In many cases IKEv2 is faster than OpenVPN since it is less CPU-intensive.
What is remote ID in IKEv2?
The Remote ID is the server address and the Local ID is the vpn username. For example, if you wish to connect to server eu-fr.321inter.net. Then the Remote ID will be also eu-fr.321inter.net, and the Local ID will be same as your username.
What ports does strongSwan use?
VM or Server that runs strongSwan is healthy and has no known issues. There is root access to the strongSwan instance. Your on-premises firewall allows UDP port 500, UDP port 4500, and ESP packets. You should be able to configure your on-premises router to route traffic through strongSwan VPN gateway.
What is site to site VPN?
A site-to-site virtual private network (VPN) refers to a connection set up between multiple networks. This could be a corporate network where multiple offices work in conjunction with each other or a branch office network with a central office and multiple branch locations.
What is strongSwan Isakmp?
Name: strongswan-isakmp Version: 5.9.2-1 Description: StrongSwan is an OpenSource IPsec implementation for the Linux operating system.\\ This meta-package contains only dependencies to establish ISAKMP /\\ IKE PSK connections, dropping other capabilities in favor of small size\\ Can fit most routers even with 4Mb flash ...
What is Charon in strongSwan?
The strongSwan VPN suite uses the native IPsec stack in the standard Linux kernel. It supports both the IKEv1 and IKEv2 protocols. charon is an IPsec IKEv2 daemon which can act as an initiator or a responder. It is written from scratch using a fully multi-threaded design and a modular architecture.
What is strongswan 5.x?
The strongSwan 5.x branch supports both the IKEv1 and IKEv2 key exchange protocols in conjunction with the native NETKEY IPsec stack of the Linux kernel. The charon IKE daemon is based on a modern object-oriented and multi-threaded concept, with 100% of the code being written in C. strongSwan's IKEv2 functionality has been successfully tested against 15 IKEv2 vendors during the third and fourth IKEv2 Interoperability Workshops in 2007 and 2008, respectively. The IKEv1 functionality has been re-implemented in 2012 from scratch by extending the source code of our successful IKEv2 charon daemon. IKEv1 interoperability has been tested against the existing strongSwan 4.6 pluto daemon and several third party products.
Can StrongSwan be downloaded from Google Play?
The free strongSwan App can be downloaded from Google Play. The VPN client supports IKEv2 only with EAP-MD5 or EAP-MSCHAPv2 password-based, or certificate based user authentication and certificate-based VPN gateway authentication.
Install StrongSwan on Ubuntu 20.04 Server
The steps in this section show you how to install and configure a StrongSwan gateway VPN server on Ubuntu 20.04. See the Install and Configure the StrongSwan Client section if you have already installed and configured the StrongSwan server.
Install and Configure the StrongSwan Client
This section shows you how to install the StrongSwan client. The StrongSwan client is used to connect to a StrongSwan server. Ensure you have your StrongSwan server’s access credentials ready before beginning the steps corresponding to your computer’s operating system.
Troubleshooting StrongSwan
Connection problems are frequently due to mismatched username and passwords between the host gateway VPN server ( /etc/ipsec.secrets) and the VPN client settings.
More Information
You may wish to consult the following resources for additional information on this topic. While these are provided in the hope that they will be useful, please note that we cannot vouch for the accuracy or timeliness of externally hosted materials.
What is ACL in VPN?
Note : An ACL for VPN traffic uses the source and destination IP addresses after Network Address Translation (NAT). NAT Exemption (optional): Typically, there must be no NAT performed on the VPN traffic. In order to exempt that traffic, you must create an identity NAT rule.
How to check if IKEv1 phase 2 is up?
In order to verify whether IKEv1 Phase 2 is up on the ASA, enter the show crypto ipsec sa command. The expected output is to see both the inbound and outbound Security Parameter Index (SPI). If the traffic passes through the tunnel, you must see the encaps/decaps counters increment.
Can you use a ping to verify VPN connection?
You can use a ping in order to verify basic connectivity.