Questions tagged [ikev2]

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Site-to-Site VPN and Remote Access VPN with Strongswan

I've recently deployed a Strongswan IKEv2 Remote Access VPN in two different sited with two different ubuntu servers. It all works great, but now i want to "merge" the two sites with a site-...
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184 views

Strongswan & Windows client: connection freezes in a few minutes

On an AWS VPS, I installed Strongswan to use it as a VPN. It works fine with iPhone client. However, when I try to connect from a Windows client, the SA connection gets established successfully and ...
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Failed to start the IKEv2 VPN connection to surfshark via NetworkManager

I try to connect to surfshark VPN provider through IKEv2 manually. Here are the logs charon-nm[5070]: 05[CFG] received initiate for NetworkManager connection Surfshark IKE2 charon-nm[5070]: 05[CFG] ...
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EAP-MS-CHAPv2 verification failed Arch Linux (strongswan)

I cannot get Strongswan, networkmanager-strongswan (client) work on your Arch-PC. My vpn-strongswan server (hereinafter deb (server)) has been configured for a long time, any devices (such as android, ...
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216 views

pfSense as IPSec remote access client

I have a pfSense router in a residential environment and need to use IPSec/IKEv2 as a remote access client to a commercial VPN provider. I know the pfSense web UI doesn't support the router being the ...
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Cannot connect a Fortigate VPN behind a static NAT to a GCP VPN gateway

Here's the need: Connect a Fortigate device behind a static 1:1 NAT to the Internet to a Google Cloud Platform (GCP) VPN gateway. Simplified ASCII Diagram: LOCAL_LAN ---- Fortigate ----- Fiber modem --...
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libreswan with Ikev2 client and plain text password

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 ...
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Vpn . Nps . Active directory . Strongswan ikev2

please help me I configured a strongswan IKEV2 On Centos7 vps and NPS and Active Directory for my authentication and accounting(radius) on windows server 2016 vps when i want to connect to my ikev2 ...
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2 votes
1 answer
1k views

iPhone users does not connect to StrongSwan VPN, while Android and Windows 10 users do?

I have a StrongSwan VPN that for some reason unknown to me cannot connect iOS users to my VPN server. A few quick notes: My StrongSwan server is front for VPN clients who connects to my network. I ...
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384 views

Cannot connect MacOS to StrongSwan VPN server installed on ubuntu

I have an issue connecting to IKEv2 VPN running on an Ubuntu VM on GCP. I am trying to connect with MacOS and Windows. I followed this tutorial to install the VPN on an Ubuntu VM. I need a VPN so that ...
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How to run Windows Ikev2 with NonetworkFirewall?

I have a small problem.I setup Firewall App Blocker in whtielist Mode(means basically It cut all Internet except allowed apps by setting "block all connection that not match firewall rule" ...
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How to disable all default cryptographic algorithms but the explicitly defined ones in OpenIKED?

I am having issues with setting up highly secure but still high performance IKEv2 tunnels between multiple data centers on OpenBSD nodes, by using very strict security features and allowing the use of ...
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StrongSwan clients fail to connect, Constraint checking failure

Client devices (Runs Windows 10 and Android with StrongSwan app) fail to connect. Certificates signed by one authority, CN is set as server public ip. Here's ipsec.conf: config setup include /var/lib/...
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3k views

Strongswan Error: no config named 'foo'

On Ubuntu 20.04, I am trying to establish a VPN tunnel to a IKEv2/Ipsec VPN site using Strongswan. However, even though I have the file /etc/ipsec.conf as shown # ipsec.conf - strongSwan IPsec ...
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Is it possible to have 2 left ids in strongswan?

I need my strongswan server to operate on 2 domain names . ipsec.conf currently contains : leftid=@sub.domain.com How can I add another domain ? Is this syntax gonna work? leftid=@sub.domain.com,@sub2....
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327 views

IKEv2 VPN on server 2019 suddenly stops working

We have a number of customers using Server 2019 as a VPN server with the IKEv2 protocol through the Routing and Remote Access (RRAS) service. Suddenly, every single one of them gets the following ...
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Does ikev1 or ikev2 support a no-authentication option? If so, how can I enable that in strongswan?

For testing purposes, I want to setup an ipsec tunnel using IKEv1 or v2 (preferably v2) that does not require any authentication - so just using the protocol to agree on the secret-keys of the ipsec ...
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Can't entablish VPN IKEv2 conection from Google Cloud Platform to FirePower CISCO

I hope you guys can help me with something that drives me crazy. On this page, Google says the protocols and cipher they accept to establish the VPN connection: https://cloud.google.com/network-...
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IKev2 strongswan got deleting half open IKE_SA with x.x.x.x after timeout with iOS device

I installed an IKEv2 strongswan vpn server on ubuntu 18.04 and also I use a valid Let's encrypte CA for that. I want to use it on an application for iOS. So here is the IPSec.conf : config setup ...
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How to set remoteId and server certificate check Strongswan IKEv2 ubuntu 18.04

I am a new member in IKEv2, and I want to install an IKEv2 vpn on an ubuntu 18.04 server, I did it through this tutorial , but I have a couple of questions. First how can I configure its remote id, ...
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StrongSwan config issue: no matching peer config found

I am trying to establish a VPN between my router (running OpenWrt) and my smartphone using IPsec. I followed the guide at https://openwrt.org/docs/guide-user/services/vpn/ipsec/strongswan/roadwarrior ...
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3 votes
2 answers
2k views

EAP / MSCHAPv2 authentications fails (only) on Windows with custom authenticator

I have a project that involves custom client authentication for the StrongSwan IKEv2 server implementation on Linux. I am running: StrongSwan 5.4.0 with eap-radius plugin Currently, we use FreeRadius ...
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1 answer
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Mikrotik IKEv2/ipsec + Windows 10 = no split include routes

I am deploying a solution using IKEv2+ipsec with certificates to connect roadwarriors to corporate network. Mikrotik CHR is used as entry point. All was swift until I started deploying the solution on ...
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What can cause an iOS device to be able to connect to IKEv2/IPsec VPN over LTE but not browse most websites?

Everything works fine over Wi-Fi. I tried disabling IPv6 using a provisioning profile. I tried on two different devices (iPhone 6 and current iPhone SE) using the same VPN provisioning profile (each ...
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1 vote
1 answer
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migrating ipsec.conf to swanctl.conf, cant seem to get it to work

this is my ipsec.conf that works as it should: conn pelle left=%defaultroute leftsourceip=%config leftauth=eap-mschapv2 eap_identity=min user right=vpn.mydomain.com rightsubnet=0.0.0.0/0 ...
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2 answers
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Specifying machine certificate issuer with Windows VPN

I am trying to create a Windows Always On VPN connection between an AD and AAD joined Windows 10 client and a StrongSwan VPN server. The Windows client has multiple "Client Authentication" ...
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2 answers
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Windows 10 IKEv2 IPSec VPN client & DH Group15 (modp3072) or higher

Is there any way to configure the Windows 10 VPN client to use DH Group 15 / Group15 (modp3072) or higher for key exchange? I am somewhat distressed that the CNSA specifies use of DH Group 15 (...
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204 views

freeradius and configure eap or pap with rest

free radius and configure eap or pap with rest i want use strongswan with free radius and rest module, i see sql and eap work together, how can configure eap with rest ? the important part is ...
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1 vote
1 answer
1k views

Checking existence of IPSEC as a meta expression in nftables

Whilst recently setting up a router manually from scratch using Debian, I decided to use nftables along with strongSwan to provide an IKEv2 VPN access into this. After much frustration along with ...
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RRAS IKEv2 VPN no response

We have an IPSEC/L2TP PSK VPN on Windows Server 2012 using RRAS. This usually works fine, but now with so many staff working from home due to COVID-19, I am getting complaints of the VPN dropping out ...
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2 answers
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Determining root cause of Windows VPN Connection Error 13801

I'm trying to get machine authentication working with Microsoft "always on vpn".. I'm running into error 13801 on attempting to connect with a client. This error implies there is some sort of ...
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IKEv2 Need a small help on Strongswan

I'm trying to create an IKEv2 Strongswan VPN server (U5.7.2/K5.3.0-42-generic) since two days on my personnal VPS (Ubuntu 19.10) to make some tests before implement it on the Unifi equipment of my ...
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234 views

IKev2 VPN Event ID 20209 - Server Authentication

I have made only one certificate for VPN access with ikev2. Within 2 days i got event id 20209, even though I didn't tried to connect. The certificate is still with me and no one else has access to it....
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Strongswan Centos 7 Config Issue

I have a problem with configuring Strongswan on Centos 7 ! First please notice that I want to connect with only username and password and I don't want to import any profiles on my phone ! My server ip ...
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1 vote
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269 views

Strongswan username and password authentication

Guys I need to set up strongswan to use username and password for connecting instead of certificate! Anyone knows how this is done?
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Rekeying denies protocols/NAT issue or config?

I'm using strongswan to connect to a MAC server using IKEv2/IPsec configuration. The server uses the proposed algorithms to establish the SA and everything works great. Upon rekeying however, the ...
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strongswan ikev2 connect to the same server

I have a strongswan ikev2 vpn installed on my server. With my win10 laptop I can connect to the vpn and and connect to everything via vpn. But how can I connect to my server? I have a service on a ...
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1 vote
1 answer
752 views

Test ike2 vpn connection on console possible?

Whatever I google for I find tutorials how to setup an IKEv2 VPN server either UI client configuration for different OS. Is it possible to test the connection with a client in a Linux console ...
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IKEv2/IPsec. Strongswan server static external ip-address. 2 pcs of Mikrotiks as clients. Routing (or what?) Mikrotiks LAN-subnets

Strongswan 5.7 on Debian 10. Static "white" ip address. 2 Mikrotiks with grey ip addresses from ISPs' and NAT: /ip address print 2 D 10.141.170.32/16 10.141.0.0 ether1 Mikrotik "A" LAN ...
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3 votes
1 answer
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strongswan ikev2 with debian. EAP authentication failed. loading EAP_MSCHAPV2 method failed

I can't get Strongswan to run on my Debian machine. I've already done a tutorial to get it to run on a Ubuntu machine but it seems impossible to me to get it to run on my Debian machine. I actually ...
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435 views

StrongSwan IKEv2 connected but no internet on some internets

I set up the StrongSwan and IKEv2 as remote access on CentOS 7, And it is working great but on some internets (not all, most ADSL modems or 4G modems) it connects but there is no internet access on ...
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IKEv2 certificate error but SSTP successfully connects Windows 10 pro / Windows Server 2019

I'm using Windows server 2019 (installed roles: AD DC, CA, DHCP, DNS, IIS, VPN). my client is Windows 10 pro. before installing the Online responder role and having a CRL server, IkEv2 was working, ...
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8 votes
2 answers
22k views

Strongswan IKEv2 vpn on Windows 10 client "policy match error"

I have the newest version of Strongswan vpn on my ubuntu server running. I followed this tutorial here and got it to work on my android and Iphone. Now I want to get it to work on my windows 10 ...
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2 votes
1 answer
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How to block an IP for IPSec VPN connections?

This is my current IpTables setup: Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere state RELATED,...
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Is strongSwan eap-mschapv2 authentication secure vs using certs?

What level of encryption is used during the authentication part of the connection? Here’s a sample /etc/ipsec.conf configuration. config setup charondebug="ike 1, knl 1, cfg 0" uniqueids=no ...
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2 votes
0 answers
3k views

Strongswan stops working after a while

I'm trying hard to resolve one question with my strongswan IKEv2 VPN. I use Linux strongSwan U5.6.1/K3.10.0-862.el7.x86_64 installed on CentOS 7 and few clients: Windows Server 2012 R2, Windows 10, ...
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1 vote
0 answers
4k views

Porting a Cisco AnyConnect profile from Windows to Mac OSX

I have a client using a VisualStudio solution to manage their website. In order to make edits, they had to set up a Windows 7 laptop for me, which I have to use to connect to their VPN before being ...
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2 votes
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Bandwidth control with TC for clients yet to be connected

I have applied bandwidth control using TC and iptables using this tutorial on my Strongswan VPN server. The bandwidth control works fine ONLY if that specific client is already connected. For example:...
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1 answer
1k views

Strongswan IKEv2 auth - pubkey and EAP

I'am trying to setup strongswan with pubkey and EAP authentication. To login users need to have certificate and valid credentials. My certificate is ok. I tested pubkey auth and it was ok, also EAP ...
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Stuup StrongSwan with user Cert

i will setting up strongswan and have some trouble with configure it. I can log in with user/pass but i will replace it with user.p12 certificate. When i add rightauth2=pubkey is login with user/pass ...
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