StrongSwan

Author: f | 2025-04-23

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strongSwan Wiki . Welcome to the strongSwan wiki. User Documentation - information on configuring and running strongSwan.; Installation Documentation - information on installing strongSwan.

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strongswan/strongswan: strongSwan - IPsec-based

Why can't I install strongSwan VPN Client?The installation of strongSwan VPN Client may fail because of the lack of device storage, poor network connection, or the compatibility of your Android device. Therefore, please check the minimum requirements first to make sure strongSwan VPN Client is compatible with your phone.How to check if strongSwan VPN Client is safe to download?strongSwan VPN Client is safe to download on APKPure, as it has a trusted and verified digital signature from its developer.How to download strongSwan VPN Client old versions?APKPure provides the latest version and all the older versions of strongSwan VPN Client. You can download any version you want from here: All Versions of strongSwan VPN ClientWhat's the file size of strongSwan VPN Client?strongSwan VPN Client takes up around 8.3 MB of storage. It's recommended to download APKPure App to install strongSwan VPN Client successfully on your mobile device with faster speed.What language does strongSwan VPN Client support?strongSwan VPN Client supports isiZulu,中文,Việt Nam, and more languages. Go to More Info to know all the languages strongSwan VPN Client supports.

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strongswan/strongswan: strongSwan - IPsec-based VPN - GitHub

In a previous tutorial, we configured an IPsec tunnel between a Cisco 1812 router and TheGreenBow IPsec VPN client installed on Windows OS. TheGreenBow is an excellent product; however, the free version is only valid for 30 days. Once the trial period expires, you must purchase a license to continue using it. Therefore, we will focus on configuring a free IPsec VPN client solution such as StrongSwan on Linux Debian.The IPsec protocol for a VPN is configured using the Internet Key Exchange (IKE) protocol. The terms IPsec and IKE are used interchangeably. An IPsec VPN is also called an IKE VPN, IKEv2 VPN, XAUTH VPN, Cisco VPN or IKE/IPsec VPN.StrongSwan is an open-source, user-space IKE implementation. IKE v1 and v2 are implemented as a user-level daemon. The IKE protocol is also encrypted. The IPsec protocol is implemented by the Linux kernel, and OpenSwan configures the kernel to add and remove VPN tunnel configurations.The network topology is depicted in Figure 1. The StrongSwan client is the initiator, and the responder is the Cisco 1812. However, OpenSwan does not use the terms "source" and "destination" or "server" and "client" because IKE/IPsec are peer-to-peer protocols. Instead, it uses the terms "left" and "right" to refer to the endpoints (the hosts). This also allows you to use the same configuration on both endpoints in most cases. However, administrators usually choose to always use "left" for the local host and "right" for the remote host. [1].Left :- strongSwan 5.9.1 installed on Debian bullseye 11Right:- Cisco 1812 IOS Version 15.1(4)M12aFigure 1 - Network Topology1. IPSec "Right" Configuration - Cisco 1812The initial IPsec tunnel configuration on the Cisco 1812 (left side) is found in R1-config.txt. The Cisco router has assigned a dynamic public IP address (95.103.161.130), which is translated to 'a102.mywire.org'. However, this dynamic IP can change after each router restart. For this reason, we rely on the domain name instead of the IP address in strongSwan configuration. Therefore, the "right" parameter configured in ipsec.conf is the domain name a102.mywire.org and not the IP address 95.103.161.130.By default, Cisco uses the IP address of the interface for the identity in the IKE phase. The right side (StrongSwan) receives the IDir '95.103.161.130' from the Cisco router, but it does not match the hostname 'a102.mywire.org'. As a result, Phase 1 is not successful, and the IPsec tunnel is not established, as shown in Figure 2.Figure 2 - Local and Remote ID Mismatch types in IKEV1For this reason, we need to ensure that the hostname is set to 'a102' and the domain name is set to 'mywire.org' in Cisco configuration.a102(config)# hostname a102a102(config)# ip domain name mywire.orgFurthermore, we need to configure router to use hostname to identify itself in the Phase 1:a102(config)# crypto isakmp identity hostnameThe complete Cisco IPsec "right side" configuration with omitted credentials is R1-final-ipsec.txt.2. strongSwan InstallationTo install strongSwan and the necessary plugins, run:$ sudo apt install strongswan libcharon-extra-pluginsThen, enable the strongSwan service and start it using the following commands:$ sudo systemctl enable strongswan-starter && sudo systemctl start strongswan-starter3. IPSec

GitHub - strongswan/strongswan: strongSwan - IPsec-based VPN

As server connected successfully to the Router2 AC86U remote location acting as client with push route enabled for remote device discovery, everything works fine with OpenVPN.IPSec: Router1 AC86U with IPSec server enabled successfully connected to my mobile phone and from it, I can see the devices connected to the Router1 but not the same for devices connected to the Router2 (with OpenVPN Client connected successfully to the Router1).The reasons of using IPSec for mobile are:I can see better performance when I want to route all traffic through the VPN tunnelOpenVPN Android App doesn't support CHACHA20-POLY1305 which is my main data-cipher right now with 2.5.0Thank you so much for this FW and support, much appreciated #4 So, for summarize, please let me know if I'm wrong: You can leave the HMAC to SHA256 if you wish, just for backward compatibility. Make sure you do use a GCM cipher, like AES-128-GCM. Btw, do you know if there's any option to push the route from remote to the IPSec VPN Server? No idea, I never really worked with Strongswan, aside from some debugging with the original Asus implementation, and performance tests. #5 I read up a little bit on v2, and see that the latest merlin release has openvpn 2.5.2. I presume to use this would require manually configuring via ssh, since there's no v2 in the drop down box etc. I was hoping to try v2 out, but looks like I should probably stick to plain tls-crypt for now. I don't care much about exotic ciphers, but I would like to have the added flood resistance that v2 brings. #6 I read up a little bit on v2, and see that the latest merlin release has openvpn 2.5.2 2.5.7.And this is a 2 years old thread.. strongSwan Wiki . Welcome to the strongSwan wiki. User Documentation - information on configuring and running strongSwan.; Installation Documentation - information on installing strongSwan. strongSwan - IPsec-based VPN. Contribute to strongswan/strongswan development by creating an account on GitHub.

strongSwan - strongSwan 5.9.6 Released

Route-based VPN or overlay network solutions (with virtual interfaces)If you run ifconfig -a or ip link show you should be seeing something like tunX below which is a tun device used by most route-based VPN:# tun device# used by route-based VPN tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr: P-t-P: Mask: UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1300 Metric:1 RX packets:10 errors:0 dropped:0 overruns:0 frame:0 TX packets:24 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:1435 (1.4 KB) TX bytes:1677 (1.6 KB)# Jan 2020 refresh# sample ifconfig output with 3 virtual interfaces# for route-based VPN or overlay networknebula1: flags=4305 mtu 1300 inet 172.16.87.100 netmask 255.255.255.0 destination 172.16.87.100 inet6 fe80::b2c4:4360:a3ae:15aa prefixlen 64 scopeid 0x20 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC) RX packets 37 bytes 2980 (2.9 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 331 bytes 17408 (17.4 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0tun0: flags=4305 mtu 1500 inet 172.16.200.1 netmask 255.255.255.0 destination 172.16.200.1 inet6 fe80::9d2e:5979:5ac2:43df prefixlen 64 scopeid 0x20 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 100 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1677 bytes 80496 (80.4 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0wg0: flags=209 mtu 1420 inet 172.16.111.100 netmask 255.255.255.0 destination 172.16.111.100 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC) RX packets 37337578 bytes 10884991930 (10.8 GB) RX errors 0 dropped 67878 overruns 0 frame 0 TX packets 60202096 bytes 66040772964 (66.0 GB) TX errors 169 dropped 44429 overruns 0 carrier 0 collisions 0ip link output5: wg0: mtu 1420 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/none6: tun0: mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 100 link/none11: nebula1: mtu 1300 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 500 link/nonePolicy-based VPN (e.g. strongSwan)Or if you are using IPsec (e.g. strongSwan), ifconfig -a will show a tunnel device (tunX) like below if you are using Route-based mode (default is policy-based):tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:192.168.11.2 P-t-P:192.168.11.2 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)If strongSwan is running policy-based routing (default), you'll be able to figure out by manipulating the kernel routing table or looking at ip-xfrm IP framework for transforming packets (encrypting payloads).# manipulate kernel routing table for more infoip rroute -nrip r show table mainip r show table local# strongswan specific table id 220ip r show table 220In addition, you can use ip tuntap show to see if there are tun/tap devices to determine if VPN is in use. ip tuntap show tun0: tun

strongSwan - strongSwan 6.0.0 Released

'cisco1812' established successfully4.2 Checking IPsec StatusTo check status of IPsec tunnel on left side (StrongSwan), enter the command below. The command provides a summary of the current IPsec Security Associations (SAs). It shows the established connections, their status, and the involved endpoints and traffic selectors.root@debian11:/home/debian# ipsec statusSecurity Associations (1 up, 0 connecting):cisco1812[6]: ESTABLISHED 3 minutes ago, 192.168.42.1[192.168.42.1]...95.103.161.130[a102.mywire.org]cisco1812{2}: INSTALLED, TUNNEL, reqid 1, ESP in UDP SPIs: c3fd7731_i 9af8961d_ocisco1812{2}: 192.168.42.1/32 === 192.168.88.0/244.3 Checking IPsec All ParametersThe command 'ipsec statusall' provides more detailed information about the IKE daemon (charon) and all active IPsec connections. It includes uptime, memory usage, loaded plugins, listening IP addresses, connection details etc.root@debian11:/home/debian# ipsec statusallStatus of IKE charon daemon (strongSwan 5.9.1, Linux 5.10.0-29-amd64, x86_64):uptime: 2 hours, since May 24 23:51:51 2024malloc: sbrk 2969600, mmap 0, used 916048, free 2053552worker threads: 11 of 16 idle, 5/0/0/0 working, job queue: 0/0/0/0, scheduled: 5loaded plugins: charon aesni aes rc2 sha2 sha1 md5 mgf1 random nonce x509 revocation constraints pubkey pkcs1 pkcs7 pkcs8 pkcs12 pgp dnskey sshkey pem openssl fips-prf gmp agent xcbc hmac gcm drbg attr kernel-netlink resolve socket-default connmark farp stroke updown eap-identity eap-aka eap-md5 eap-gtc eap-mschapv2 eap-radius eap-tls eap-ttls eap-tnc xauth-generic xauth-eap xauth-pam tnc-tnccs dhcp lookip error-notify certexpire led addrblock unity countersListening IP addresses:192.168.42.1Connections:cisco1812: 192.168.42.1...a102.mywire.org IKEv1 Aggressivecisco1812: local: [192.168.42.1] uses pre-shared key authenticationcisco1812: local: [192.168.42.1] uses XAuth authentication: any with XAuth identity 'vpnuser1'cisco1812: remote: [a102.mywire.org] uses pre-shared key authenticationcisco1812: child: dynamic === 192.168.88.0/24 TUNNELSecurity Associations (1 up, 0 connecting):cisco1812[6]: ESTABLISHED 4 minutes ago, 192.168.42.1[192.168.42.1]...95.103.161.130[a102.mywire.org]cisco1812[6]: IKEv1 SPIs: 4cdd54bce6e4e709_i* fabbae546b66b0d3_r, pre-shared key+XAuth reauthentication in 23 hourscisco1812[6]: IKE proposal: AES_CBC_256/HMAC_SHA2_512_256/PRF_HMAC_SHA2_512/MODP_1536cisco1812{2}: INSTALLED, TUNNEL, reqid 1, ESP in UDP SPIs: c3fd7731_i 9af8961d_ocisco1812{2}: AES_CBC_256/HMAC_SHA2_512_256, 0 bytes_i, 0 bytes_o, rekeying in 50 minutescisco1812{2}: 192.168.42.1/32 === 192.168.88.0/244.4 Bringing Down IPsec TunnelTo close the IPsec tunnel enter the command below. The command closes the specified IPsec connection, terminating the IPSec Security Associations (SAs) and the IKE_SA. It sends the necessary DELETE messages to the remote peer to properly close the connection.root@debian11:/home/debian# ipsec down cisco1812closing CHILD_SA cisco1812{2} with SPIs c3fd7731_i (0 bytes) 9af8961d_o (0 bytes) and TS 192.168.42.1/32 === 192.168.88.0/24sending DELETE for ESP CHILD_SA with SPI c3fd7731generating INFORMATIONAL_V1 request 1442320517 [ HASH D ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (124 bytes)deleting IKE_SA cisco1812[6] between 192.168.42.1[192.168.42.1]...95.103.161.130[a102.mywire.org]sending DELETE for IKE_SA cisco1812[6]generating INFORMATIONAL_V1 request 3190336075 [ HASH D ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (140 bytes)IKE_SA [6] closed successfullyConclusionIn this tutorial, we set up an IPsec tunnel between a Cisco 1812 router and a Linux Debian system running StrongSwan. This choice was prompted by the trial limitations of TheGreenBow IPsec VPN client. We configured both sides of the tunnel, addressing issues like identity mismatch. After establishing the tunnel, we verified its status and learned how to terminate it gracefully. This tutorial equips us to deploy and manage IPsec VPN connections using StrongSwan on Linux Debian.

strongSwan - strongSwan 5.9.8 Released

I need to set up a connection to VPN server with Libreswan. I can't use strongswan, since they are not working well together when installed on the same OC.My system is Linux Debian 10 (Buster)Kernel version: 4.19.0-17I already have a working L2TP/IPSec VPN connection, so dont want to install additional software.When I scan remote VPN with ike-scan, server responses with next:Handshake returned:HDR=(CKY-R=574aa700c8ed7aa6, IKEv2)SA=(Encr=AES_CBC,KeyLength=128 Integ=HMAC_SHA1_96 Prf=HMAC_SHA1 DH_Group=2:modp1024)KeyExchange(132 bytes) Nonce(32 bytes) Notification(4 bytes)This looks like libreswan can support the connection.When I try to start new connection I added into ipsec.conf, I got next:002 "ikev2-srv" #1: constructed local IKE proposals for ikev2-srv (IKE SA initiator selecting KE): 1:IKE:ENCR=AES_GCM_C_256;PRF=HMAC_SHA2_512,HMAC_SHA2_256,HMAC_SHA1;INTEG=NONE;DH=MODP2048,MODP3072,MODP4096,MODP8192,ECP_256 2:IKE:ENCR=AES_GCM_C_128;PRF=HMAC_SHA2_512,HMAC_SHA2_256,HMAC_SHA1;INTEG=NONE;DH=MODP2048,MODP3072,MODP4096,MODP8192,ECP_256 3:IKE:ENCR=AES_CBC_256;PRF=HMAC_SHA2_512,HMAC_SHA2_256,HMAC_SHA1;INTEG=HMAC_SHA2_512_256,HMAC_SHA2_256_128,HMAC_SHA1_96;DH=MODP2048,MODP3072,MODP4096,MODP8192,ECP_256 4:IKE:ENCR=AES_CBC_128;PRF=HMAC_SHA2_512,HMAC_SHA2_256,HMAC_SHA1;INTEG=HMAC_SHA2_512_256,HMAC_SHA2_256_128,HMAC_SHA1_96;DH=MODP2048,MODP3072,MODP4096,MODP8192,ECP_256 (default)133 "ikev2-srv" #1: STATE_PARENT_I1: sent v2I1, expected v2R1002 "ikev2-srv" #1: WARNING: connection ikev2-srv PSK length of 8 bytes is too short for sha PRF in FIPS mode (10 bytes required)Question is: how to configure mentioned Ikev2 vpn connection with libreswan?I got login / pass and server ip and nothing more. Also , my pass is smaller than it is expected(according to output).

strongSwan - strongSwan 5.9.4 Released

"Left" Configuration - StrongSwanWhen configuring IPSec with StrongSwan, we typically need to modify two main files - /etc/ipsec.conf and /etc/ipsec.secrets./etc/ipsec.conf: This file is the main configuration file for strongSwan. It contains the configuration settings for IPSec connections, policies, and other options. In this file, we define various aspects of your IPSec setup, including connections, encryption settings, authentication methods, and more. Each section in this file corresponds to a specific IPSec connection or a global configuration setting./etc/ipsec.secrets: This file contains sensitive information such as pre-shared keys (PSKs) or private keys used for authentication in IPSec connections. StrongSwan requires this file to securely store secrets used during IPSec negotiation. It is crucial to protect this file's permissions to prevent unauthorized access to sensitive information.3.1 IPsec.conf ConfigurationThis configuration sets up a connection named "cicos1812" with the specified settings. You can add more customize other connection-specific settings as needed. To obtain more details about parameters in IPsec.conf, read man for ipsec.conf (man ipsec.conf).Edit /etc/ipsec.conf file and insert the following code to it:$ sudo vi /etc/ipsec.confFigure 3 - File /etc/ipsec.conf3.2 IPsec.secret ConfigurationThis file holds shared secrets for authentication. Edit /etc/ipsec.conf file and insert the following code to it:$ sudo vi /etc/ipsec.secrets4. Opening IPsec Tunnel and Checking IPsec Status4.1 Bringing Up IPsec tunnelTo bring up the IPsec tunnel 'cisco1812' use the command bellow in Linux. This command initiates the Aggressive Mode IKE_SA with the specified connection name, in this case, "cisco1812". It negotiates the IPSec connection parameters with the remote peer and establishes the tunnel. The output displays the negotiation process, including the selected cryptographic proposals and the establishment of the IPSec Security Associations (SAs).root@debian11:/home/debian# ipsec up cisco1812initiating Aggressive Mode IKE_SA cisco1812[6] to 95.103.161.130generating AGGRESSIVE request 0 [ SA KE No ID V V V V V ]sending packet: from 192.168.42.1[500] to 95.103.161.130[500] (496 bytes)received packet: from 95.103.161.130[500] to 192.168.42.1[500] (627 bytes)parsed AGGRESSIVE response 0 [ SA V V V V V KE ID No HASH NAT-D NAT-D ]received Cisco Unity vendor IDreceived DPD vendor IDreceived unknown vendor ID: 0f:7c:09:49:6b:67:b0:d3:0f:81:bf:a5:91:5f:d8:28received XAuth vendor IDreceived NAT-T (RFC 3947) vendor IDselected proposal: IKE:AES_CBC_256/HMAC_SHA2_512_256/PRF_HMAC_SHA2_512/MODP_1536local host is behind NAT, sending keep alivesgenerating AGGRESSIVE request 0 [ HASH NAT-D NAT-D ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (236 bytes)received packet: from 95.103.161.130[4500] to 192.168.42.1[4500] (124 bytes)parsed TRANSACTION request 2643196181 [ HASH CPRQ(X_USER X_PWD) ]generating TRANSACTION response 2643196181 [ HASH CPRP(X_USER X_PWD) ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (140 bytes)received packet: from 95.103.161.130[4500] to 192.168.42.1[4500] (124 bytes)parsed TRANSACTION request 3961229093 [ HASH CPS(X_STATUS) ]XAuth authentication of 'vpnuser1' (myself) successfulIKE_SA cisco1812[6] established between 192.168.42.1[192.168.42.1]...95.103.161.130[a102.mywire.org]scheduling reauthentication in 86160smaximum IKE_SA lifetime 86340sgenerating TRANSACTION response 3961229093 [ HASH CPA(X_STATUS) ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (124 bytes)generating QUICK_MODE request 1327357349 [ HASH SA No ID ID ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (268 bytes)received packet: from 95.103.161.130[4500] to 192.168.42.1[4500] (236 bytes)parsed QUICK_MODE response 1327357349 [ HASH SA No ID ID N((24576)) ]selected proposal: ESP:AES_CBC_256/HMAC_SHA2_512_256/NO_EXT_SEQCHILD_SA cisco1812{2} established with SPIs c3fd7731_i 9af8961d_o and TS 192.168.42.1/32 === 192.168.88.0/24generating QUICK_MODE request 1327357349 [ HASH ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (108 bytes)connection. strongSwan Wiki . Welcome to the strongSwan wiki. User Documentation - information on configuring and running strongSwan.; Installation Documentation - information on installing strongSwan. strongSwan - IPsec-based VPN. Contribute to strongswan/strongswan development by creating an account on GitHub.

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strongSwan - strongSwan 5.8.2 Released

Use Our App Manual Setup Step 2 Get credentials to use to authenticate in the StrongSwan app (requires a pro account). Step 3 Click "Add VPN Profile" Step 4 Input the Server address, username and password as provided on the Profile Generator page. This username and password will NOT be the same as your Windscribe login. VPN Type should be "IKEv2 EAP (Username/Password)". Step 5 Click "Show Advanced Settings" Check mark "Block IPv4 traffic not destined for the VPN." Check mark "Block IPv6 traffic not destined for the VPN." Step 6 Click on the profile you just created to connect. OpenVPN via OpenVPN for Android app Step 2 On your mobile device Download the configs (requires a Pro account). Open the downloaded config file Step 3 Application will attempt to import the config file. Rename it to whatever you wish and press the check mark button at the top right. Step 4 Edit the created profile. Check mark "Use default Route" for IPv4 and IP6 sections. Go back to the main screen. Step 5 Click on the created profile to connect. It will ask you for a username + password. This username and password will NOT be the same as your Windscribe login. Get the username + password from the this page (at the bottom) Check mark "Save Password" and press OK Step 6 If it says "Initialization Sequence Completed" at the bottom of the log, you are now connected.

strongSwan - strongSwan Released - downloads.strongswan

Shield your online data with IPVanishOne account, unlimited devices2,400+ servers in 140 locations In the latest releases of IPVanish for Android and Amazon users can set their VPN connection type to IKEv2, totaling the variety of supported protocols to four. Learn more about the VPN protocols we support at IPVanish to make the right connection type for your activity. It’s been a long time coming but we’re pleased to announce that as of today, IPVanish supports the IKEv2 VPN protocol on all platforms.Short for Internet Key Exchange Version 2, IKEv2 is an incredibly efficient protocol that straddles the line between security and speed. Internally we really favor this connection type because it’s got a rock-solid foundation paired with major capability. As VPN providers, we can either improve encryption or speed up connections with IKEv2; other protocols aren’t as performant. Or as one of our network architects put it, “[i]t blows OpenVPN out of the water in most cases.”Built upon the long-trusted IPSec encryption framework, IKEv2 was first developed in the mid-‘00s by Cisco and Microsoft for mobile internet users. Nowadays there are open-source iterations of IKEv2 like strongSwan, which was our own implementation method for Android users at IPVanish until recently. While IKEv2 is only available in newer mobile devices, it is considered a more secure extension of the IPSec protocol because devices can switch between a Wi-Fi and cellular network without disrupting the VPN connection. The setup is simple: toggle between protocols right within the IPVanish app connection settings. But if you’d like an extra hand, we have our Android setup guide to help you along the way. Crysta is a longtime contributor to IPVanish and has spent more than a decade sharing cybersecurity best practice tips. She is an ADDY award-winning copywriter based in Orlando and an avid fan of the local sports teams. Looking for the best VPN online? Sign up today to get started.. strongSwan Wiki . Welcome to the strongSwan wiki. User Documentation - information on configuring and running strongSwan.; Installation Documentation - information on installing strongSwan.

strongSwan - strongSwan 5.9.7 Released

3.40 43 reviews 10,000+ Downloads Free Connects your device to Securepoint Unified Security using VPN About Securepoint VPN Clien‪t Securepoint VPN Clien‪t is a business app developedby Securepoint GmbH. The APK has been available since October 2018. In the last 30 days, the app was downloaded about 230 times. It's currently not in the top ranks. It's rated 3.40 out of 5 stars, based on 43 ratings. The last update of the app was on January 13, 2025. Securepoint VPN Clien‪t has a content rating "Everyone". Securepoint VPN Clien‪t has an APK download size of 19.81 MB and the latest version available is 3.1.0. Designed for Android version 6.0+. Securepoint VPN Clien‪t is FREE to download. Description Securepoint VPN Client is an SSL-VPN client developed by Securepoint GmbH. The following features are offered:* Easy remote configuration by Securepoint Unified Security* Easily import VPN configurations from the device's file system to connect to your VPN server* Full IPv6 support* Consciously lean implementation* This app uses the modern VPNService APIRecent changes:Feature: Authentication before app startFeature: UI modificationsFeature: Renaming the connection logsFix: Error fixed where an invalid IPv6 address can lead to a crashFix: Error fixed where unsaved changes in the profile editor were not recorded correctlyFix: Error fixed where simultaneous profile update and navigation change can lead to a crashFix: Sending function and widget have been fixed for shared work profiles">Show more More data about Securepoint VPN Clien‪t Price Free to download Total downloads 15 thousand Recent downloads 230 Rating 3.40 based on 43 ratings Ranking Not ranked Version 3.1.0 APK size 19.8 MB Number of libraries 12 Designed for Android 6.0+ Suitable for Everyone Ads NO ads Alternatives for the Securepoint VPN Clien‪t app Securepoint VPN Clien‪t compared with similar apps Keywords that only this app has Securepoint Fixed Feature Error Device Unified Lead Crash Profile Common keywords of similar apps Vpn Fix Security Client App Keywords missing from this app Secure Fast Connection Online Vpnservice Server Access Service Privacy Internet Servers Data Connect Easy Users Private Provide Recent User Smart Safe Speed Interface Core Functionality Required Application Browsing Experience Unlimited Strongswan Tunnel Enjoy Websites Streaming Bugs Support Authentication Simple Trend Proxy Features Google Play Rating history and histogram Downloads over time Securepoint VPN Clien‪t has been downloaded 15 thousand times. Over the past 30 days, it has been downloaded 230 times. Changelog Developer information for Securepoint GmbH Are you the

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Why can't I install strongSwan VPN Client?The installation of strongSwan VPN Client may fail because of the lack of device storage, poor network connection, or the compatibility of your Android device. Therefore, please check the minimum requirements first to make sure strongSwan VPN Client is compatible with your phone.How to check if strongSwan VPN Client is safe to download?strongSwan VPN Client is safe to download on APKPure, as it has a trusted and verified digital signature from its developer.How to download strongSwan VPN Client old versions?APKPure provides the latest version and all the older versions of strongSwan VPN Client. You can download any version you want from here: All Versions of strongSwan VPN ClientWhat's the file size of strongSwan VPN Client?strongSwan VPN Client takes up around 8.3 MB of storage. It's recommended to download APKPure App to install strongSwan VPN Client successfully on your mobile device with faster speed.What language does strongSwan VPN Client support?strongSwan VPN Client supports isiZulu,中文,Việt Nam, and more languages. Go to More Info to know all the languages strongSwan VPN Client supports.

2025-04-20
User2362

In a previous tutorial, we configured an IPsec tunnel between a Cisco 1812 router and TheGreenBow IPsec VPN client installed on Windows OS. TheGreenBow is an excellent product; however, the free version is only valid for 30 days. Once the trial period expires, you must purchase a license to continue using it. Therefore, we will focus on configuring a free IPsec VPN client solution such as StrongSwan on Linux Debian.The IPsec protocol for a VPN is configured using the Internet Key Exchange (IKE) protocol. The terms IPsec and IKE are used interchangeably. An IPsec VPN is also called an IKE VPN, IKEv2 VPN, XAUTH VPN, Cisco VPN or IKE/IPsec VPN.StrongSwan is an open-source, user-space IKE implementation. IKE v1 and v2 are implemented as a user-level daemon. The IKE protocol is also encrypted. The IPsec protocol is implemented by the Linux kernel, and OpenSwan configures the kernel to add and remove VPN tunnel configurations.The network topology is depicted in Figure 1. The StrongSwan client is the initiator, and the responder is the Cisco 1812. However, OpenSwan does not use the terms "source" and "destination" or "server" and "client" because IKE/IPsec are peer-to-peer protocols. Instead, it uses the terms "left" and "right" to refer to the endpoints (the hosts). This also allows you to use the same configuration on both endpoints in most cases. However, administrators usually choose to always use "left" for the local host and "right" for the remote host. [1].Left :- strongSwan 5.9.1 installed on Debian bullseye 11Right:- Cisco 1812 IOS Version 15.1(4)M12aFigure 1 - Network Topology1. IPSec "Right" Configuration - Cisco 1812The initial IPsec tunnel configuration on the Cisco 1812 (left side) is found in R1-config.txt. The Cisco router has assigned a dynamic public IP address (95.103.161.130), which is translated to 'a102.mywire.org'. However, this dynamic IP can change after each router restart. For this reason, we rely on the domain name instead of the IP address in strongSwan configuration. Therefore, the "right" parameter configured in ipsec.conf is the domain name a102.mywire.org and not the IP address 95.103.161.130.By default, Cisco uses the IP address of the interface for the identity in the IKE phase. The right side (StrongSwan) receives the IDir '95.103.161.130' from the Cisco router, but it does not match the hostname 'a102.mywire.org'. As a result, Phase 1 is not successful, and the IPsec tunnel is not established, as shown in Figure 2.Figure 2 - Local and Remote ID Mismatch types in IKEV1For this reason, we need to ensure that the hostname is set to 'a102' and the domain name is set to 'mywire.org' in Cisco configuration.a102(config)# hostname a102a102(config)# ip domain name mywire.orgFurthermore, we need to configure router to use hostname to identify itself in the Phase 1:a102(config)# crypto isakmp identity hostnameThe complete Cisco IPsec "right side" configuration with omitted credentials is R1-final-ipsec.txt.2. strongSwan InstallationTo install strongSwan and the necessary plugins, run:$ sudo apt install strongswan libcharon-extra-pluginsThen, enable the strongSwan service and start it using the following commands:$ sudo systemctl enable strongswan-starter && sudo systemctl start strongswan-starter3. IPSec

2025-03-26
User7884

Route-based VPN or overlay network solutions (with virtual interfaces)If you run ifconfig -a or ip link show you should be seeing something like tunX below which is a tun device used by most route-based VPN:# tun device# used by route-based VPN tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr: P-t-P: Mask: UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1300 Metric:1 RX packets:10 errors:0 dropped:0 overruns:0 frame:0 TX packets:24 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:1435 (1.4 KB) TX bytes:1677 (1.6 KB)# Jan 2020 refresh# sample ifconfig output with 3 virtual interfaces# for route-based VPN or overlay networknebula1: flags=4305 mtu 1300 inet 172.16.87.100 netmask 255.255.255.0 destination 172.16.87.100 inet6 fe80::b2c4:4360:a3ae:15aa prefixlen 64 scopeid 0x20 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC) RX packets 37 bytes 2980 (2.9 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 331 bytes 17408 (17.4 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0tun0: flags=4305 mtu 1500 inet 172.16.200.1 netmask 255.255.255.0 destination 172.16.200.1 inet6 fe80::9d2e:5979:5ac2:43df prefixlen 64 scopeid 0x20 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 100 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1677 bytes 80496 (80.4 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0wg0: flags=209 mtu 1420 inet 172.16.111.100 netmask 255.255.255.0 destination 172.16.111.100 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC) RX packets 37337578 bytes 10884991930 (10.8 GB) RX errors 0 dropped 67878 overruns 0 frame 0 TX packets 60202096 bytes 66040772964 (66.0 GB) TX errors 169 dropped 44429 overruns 0 carrier 0 collisions 0ip link output5: wg0: mtu 1420 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/none6: tun0: mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 100 link/none11: nebula1: mtu 1300 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 500 link/nonePolicy-based VPN (e.g. strongSwan)Or if you are using IPsec (e.g. strongSwan), ifconfig -a will show a tunnel device (tunX) like below if you are using Route-based mode (default is policy-based):tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:192.168.11.2 P-t-P:192.168.11.2 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)If strongSwan is running policy-based routing (default), you'll be able to figure out by manipulating the kernel routing table or looking at ip-xfrm IP framework for transforming packets (encrypting payloads).# manipulate kernel routing table for more infoip rroute -nrip r show table mainip r show table local# strongswan specific table id 220ip r show table 220In addition, you can use ip tuntap show to see if there are tun/tap devices to determine if VPN is in use. ip tuntap show tun0: tun

2025-04-07
User9918

'cisco1812' established successfully4.2 Checking IPsec StatusTo check status of IPsec tunnel on left side (StrongSwan), enter the command below. The command provides a summary of the current IPsec Security Associations (SAs). It shows the established connections, their status, and the involved endpoints and traffic selectors.root@debian11:/home/debian# ipsec statusSecurity Associations (1 up, 0 connecting):cisco1812[6]: ESTABLISHED 3 minutes ago, 192.168.42.1[192.168.42.1]...95.103.161.130[a102.mywire.org]cisco1812{2}: INSTALLED, TUNNEL, reqid 1, ESP in UDP SPIs: c3fd7731_i 9af8961d_ocisco1812{2}: 192.168.42.1/32 === 192.168.88.0/244.3 Checking IPsec All ParametersThe command 'ipsec statusall' provides more detailed information about the IKE daemon (charon) and all active IPsec connections. It includes uptime, memory usage, loaded plugins, listening IP addresses, connection details etc.root@debian11:/home/debian# ipsec statusallStatus of IKE charon daemon (strongSwan 5.9.1, Linux 5.10.0-29-amd64, x86_64):uptime: 2 hours, since May 24 23:51:51 2024malloc: sbrk 2969600, mmap 0, used 916048, free 2053552worker threads: 11 of 16 idle, 5/0/0/0 working, job queue: 0/0/0/0, scheduled: 5loaded plugins: charon aesni aes rc2 sha2 sha1 md5 mgf1 random nonce x509 revocation constraints pubkey pkcs1 pkcs7 pkcs8 pkcs12 pgp dnskey sshkey pem openssl fips-prf gmp agent xcbc hmac gcm drbg attr kernel-netlink resolve socket-default connmark farp stroke updown eap-identity eap-aka eap-md5 eap-gtc eap-mschapv2 eap-radius eap-tls eap-ttls eap-tnc xauth-generic xauth-eap xauth-pam tnc-tnccs dhcp lookip error-notify certexpire led addrblock unity countersListening IP addresses:192.168.42.1Connections:cisco1812: 192.168.42.1...a102.mywire.org IKEv1 Aggressivecisco1812: local: [192.168.42.1] uses pre-shared key authenticationcisco1812: local: [192.168.42.1] uses XAuth authentication: any with XAuth identity 'vpnuser1'cisco1812: remote: [a102.mywire.org] uses pre-shared key authenticationcisco1812: child: dynamic === 192.168.88.0/24 TUNNELSecurity Associations (1 up, 0 connecting):cisco1812[6]: ESTABLISHED 4 minutes ago, 192.168.42.1[192.168.42.1]...95.103.161.130[a102.mywire.org]cisco1812[6]: IKEv1 SPIs: 4cdd54bce6e4e709_i* fabbae546b66b0d3_r, pre-shared key+XAuth reauthentication in 23 hourscisco1812[6]: IKE proposal: AES_CBC_256/HMAC_SHA2_512_256/PRF_HMAC_SHA2_512/MODP_1536cisco1812{2}: INSTALLED, TUNNEL, reqid 1, ESP in UDP SPIs: c3fd7731_i 9af8961d_ocisco1812{2}: AES_CBC_256/HMAC_SHA2_512_256, 0 bytes_i, 0 bytes_o, rekeying in 50 minutescisco1812{2}: 192.168.42.1/32 === 192.168.88.0/244.4 Bringing Down IPsec TunnelTo close the IPsec tunnel enter the command below. The command closes the specified IPsec connection, terminating the IPSec Security Associations (SAs) and the IKE_SA. It sends the necessary DELETE messages to the remote peer to properly close the connection.root@debian11:/home/debian# ipsec down cisco1812closing CHILD_SA cisco1812{2} with SPIs c3fd7731_i (0 bytes) 9af8961d_o (0 bytes) and TS 192.168.42.1/32 === 192.168.88.0/24sending DELETE for ESP CHILD_SA with SPI c3fd7731generating INFORMATIONAL_V1 request 1442320517 [ HASH D ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (124 bytes)deleting IKE_SA cisco1812[6] between 192.168.42.1[192.168.42.1]...95.103.161.130[a102.mywire.org]sending DELETE for IKE_SA cisco1812[6]generating INFORMATIONAL_V1 request 3190336075 [ HASH D ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (140 bytes)IKE_SA [6] closed successfullyConclusionIn this tutorial, we set up an IPsec tunnel between a Cisco 1812 router and a Linux Debian system running StrongSwan. This choice was prompted by the trial limitations of TheGreenBow IPsec VPN client. We configured both sides of the tunnel, addressing issues like identity mismatch. After establishing the tunnel, we verified its status and learned how to terminate it gracefully. This tutorial equips us to deploy and manage IPsec VPN connections using StrongSwan on Linux Debian.

2025-04-10
User8635

"Left" Configuration - StrongSwanWhen configuring IPSec with StrongSwan, we typically need to modify two main files - /etc/ipsec.conf and /etc/ipsec.secrets./etc/ipsec.conf: This file is the main configuration file for strongSwan. It contains the configuration settings for IPSec connections, policies, and other options. In this file, we define various aspects of your IPSec setup, including connections, encryption settings, authentication methods, and more. Each section in this file corresponds to a specific IPSec connection or a global configuration setting./etc/ipsec.secrets: This file contains sensitive information such as pre-shared keys (PSKs) or private keys used for authentication in IPSec connections. StrongSwan requires this file to securely store secrets used during IPSec negotiation. It is crucial to protect this file's permissions to prevent unauthorized access to sensitive information.3.1 IPsec.conf ConfigurationThis configuration sets up a connection named "cicos1812" with the specified settings. You can add more customize other connection-specific settings as needed. To obtain more details about parameters in IPsec.conf, read man for ipsec.conf (man ipsec.conf).Edit /etc/ipsec.conf file and insert the following code to it:$ sudo vi /etc/ipsec.confFigure 3 - File /etc/ipsec.conf3.2 IPsec.secret ConfigurationThis file holds shared secrets for authentication. Edit /etc/ipsec.conf file and insert the following code to it:$ sudo vi /etc/ipsec.secrets4. Opening IPsec Tunnel and Checking IPsec Status4.1 Bringing Up IPsec tunnelTo bring up the IPsec tunnel 'cisco1812' use the command bellow in Linux. This command initiates the Aggressive Mode IKE_SA with the specified connection name, in this case, "cisco1812". It negotiates the IPSec connection parameters with the remote peer and establishes the tunnel. The output displays the negotiation process, including the selected cryptographic proposals and the establishment of the IPSec Security Associations (SAs).root@debian11:/home/debian# ipsec up cisco1812initiating Aggressive Mode IKE_SA cisco1812[6] to 95.103.161.130generating AGGRESSIVE request 0 [ SA KE No ID V V V V V ]sending packet: from 192.168.42.1[500] to 95.103.161.130[500] (496 bytes)received packet: from 95.103.161.130[500] to 192.168.42.1[500] (627 bytes)parsed AGGRESSIVE response 0 [ SA V V V V V KE ID No HASH NAT-D NAT-D ]received Cisco Unity vendor IDreceived DPD vendor IDreceived unknown vendor ID: 0f:7c:09:49:6b:67:b0:d3:0f:81:bf:a5:91:5f:d8:28received XAuth vendor IDreceived NAT-T (RFC 3947) vendor IDselected proposal: IKE:AES_CBC_256/HMAC_SHA2_512_256/PRF_HMAC_SHA2_512/MODP_1536local host is behind NAT, sending keep alivesgenerating AGGRESSIVE request 0 [ HASH NAT-D NAT-D ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (236 bytes)received packet: from 95.103.161.130[4500] to 192.168.42.1[4500] (124 bytes)parsed TRANSACTION request 2643196181 [ HASH CPRQ(X_USER X_PWD) ]generating TRANSACTION response 2643196181 [ HASH CPRP(X_USER X_PWD) ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (140 bytes)received packet: from 95.103.161.130[4500] to 192.168.42.1[4500] (124 bytes)parsed TRANSACTION request 3961229093 [ HASH CPS(X_STATUS) ]XAuth authentication of 'vpnuser1' (myself) successfulIKE_SA cisco1812[6] established between 192.168.42.1[192.168.42.1]...95.103.161.130[a102.mywire.org]scheduling reauthentication in 86160smaximum IKE_SA lifetime 86340sgenerating TRANSACTION response 3961229093 [ HASH CPA(X_STATUS) ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (124 bytes)generating QUICK_MODE request 1327357349 [ HASH SA No ID ID ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (268 bytes)received packet: from 95.103.161.130[4500] to 192.168.42.1[4500] (236 bytes)parsed QUICK_MODE response 1327357349 [ HASH SA No ID ID N((24576)) ]selected proposal: ESP:AES_CBC_256/HMAC_SHA2_512_256/NO_EXT_SEQCHILD_SA cisco1812{2} established with SPIs c3fd7731_i 9af8961d_o and TS 192.168.42.1/32 === 192.168.88.0/24generating QUICK_MODE request 1327357349 [ HASH ]sending packet: from 192.168.42.1[4500] to 95.103.161.130[4500] (108 bytes)connection

2025-03-27

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