Questions tagged [ipsec]
IPSec is a method to provide internet security over the layer 3 of the OSI model.
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How can I setup FIREWALLD with IPSEC (StrongSwan) Site-to-Site to make PING work on Debian 12?
I have 3 nodes with public and local IP address, each:
Node A: edge router #1 (10.41.1.0/24)
Node B: edge router #2 (10.48.2.0/24)
Node C: VMS with Debian 12, docker containers and firewalld (ex. 172....
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PFsense: fake subnet
I have got on IPSec tunnel mapping a remote 172.x/24 network to my local 10.x/16 network.
Because I cannot change the configuration on the remote site I need to use this like this (with 10.x/16 ...
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How are `vti` and `xfrm` iproute2 interfaces supposed to be configured and used with xfrm states and policies?
XFRM states and policies enable configuring IPsec encryption without a virtual interface. The vti and xfrm interface types, however, I think make it possible to route traffic through a virtual ...
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Allowing incoming ICMP from only a specified source IP
In the predetermined snippet:
netsh advfirewall firewall add rule name="ICMP Allow incoming V4 echo request"
protocol=icmpv4:8,any dir=in action=allow
What would I change exactly to allow ...
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To allow IPsec NAT-T traffic to pass through, why does the firewall still need to permit ESP when it already allows UDP 4500?
I established an IPsec VPN tunnel between two Juniper SRX routers across NAT, with the NAT being performed by the firewall (a Linux server). When attempting to configure the firewall rules to allow ...
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UDMP Wireguard Server + IPSec Site-to-site
We have a UDMP with a few VLANs : 10.92.10.0/24 , 10.92.41.0/24, 10.92.42.0/24
We have added a Wireguard server, which uses 192.168.4.0/24, and works wonderfully (clients can connect and access ...
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IPSec S2S peer B host cannot receive ICMP reply or access host resources on peer A
I've got an IPSec S2S tunnel setup. The VPN is connected, tunnel established.
Here's the network topology:
(for reference, I am Peer A)
Problem:
host A pings host B and gets reply (this is not a ...
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Creating an IP alias for a device on another subnet behind a VPN
I set up a site-to-site VPN with IPsec between two routers.
Router 1 (DLink DSR-250V2) controls the 11.11.11.0/24 subnet.
Router 2 controls the 192.168.1.0/24 subnet.
The tunnel itself works fine. ...
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nftables config for ipsec (strongswan) vpn
If have got a working IPSec connection between a device (raspberry) on remote side (10.X.117.0/24 network) and the local network (10.Y.0.0/16 network).
The raspberry has a static 10.X.117.1 IP on its ...
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How to chain in cascade two VPNs on macOS?
Given the following VPNs:
a WireGuard VPN I've created with a Fritz!Box
a Cisco IPSec VPN
I'd like to know if it's possible to connect to the Cisco VPN using the IP obtained via the WireGuard VPN. ...
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How to setup VPN connection from android 13/14 native VPN client to mikrotik routerOS for testing mobile app with backend behind a private network?
I want to test my mobile app on Android 13 with test backend located in private network. Therefore I need to access this network via VPN tunnel.
Since L2TP/PPTP VPN connections are not supported on ...
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set network interface for strongswan
I am using StrongSwan on Raspberry Pi with a LTE token which is handled as eth1. It works fine as long nothing is connected to the ethernet port (eth0).
Then StrongSwan wants to use eth0 which fails.
...
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IpSec StrongSwan HA config misses / no connection
I am using strongswan on rasberian 12 to connect to PFsense with /etc/ipsec.conf from an external network to an PfSense:
config setup
conn %default
keyexchange=ikev1
conn peer-ipsec.xxx.de-...
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IPSEC libreswan interface endpoint does not match left or right
I am using libreswan on raspberry Pi OS 12 to connect to PFsense with /etc/ipsec.conf
from an external network
config setup
conn %default
#keyexchange=ikev1
conn peer-ipsec.xxx.de-tunnel-1
...
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Routing specific subnet through a local peer
I have two (almost identical) Ubuntu machines with the local IP of 10.0.0.10 and 10.0.0.20, let's call them TEN and TWENTY respectively. Both have the default gateway of 10.0.0.1.
On TEN I have a site-...
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Mac OSX can dig or nslookup but cannot ping host
I am facing a problem with my mac on a Sophos Remote IpSec VPN.
The VPN IpSec is set to be the Default Gateway.
I can connect to the VPN, and I can join every IP on my remote network.
I can dig and ...
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Bandwidth control using traffic control `tc` on Strongswan ipsec connection
I am in the need to use traffic control tc to regulate the bandwidth.
From what I known is that I can manage the bandwidth using the following
DEV=eth0
RATE="100kbps"
tc qdisc del dev $DEV ...
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Cannot establish IPv6 connection with strongswan using IKEv2 and MSCHAPv2 Host-To-Host (Legacy configuration)
I am unable to get a connection with IPv6 host-to-host.
Below is the log output (anonymized)
Sep 27 14:25:18 vpn.xxxx.tld ipsec[13769]: 00[DMN] Starting IKE charon daemon (strongSwan 5.9.8, Linux 6.1....
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Using remore office local internet
I bought two routers (DrayTek Vigor 2866ax) to connect offices in different countries. The problem we have is we need to use internet of other country to connect to our bank accounts and local ...
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P12 Certificate Authentication - what is the correct method
I've been able to successfully set up an IKEv2/IPSec VPN Server using certificate authentication. However, I have a general issue regarding the correct method of creating P12 user certificates.
I've ...
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Downgrade libreswan version inside docker alpine
I configured vpn server inside docker from this repo 10 months ago. But recently met connection errors. I found this issue and want to try fix it with downgrading libreswan to 4.15, but don't ...
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Configuring IPsec idle timeout on Windows
I am experimenting with built-in Windows IPsec functionality (advfirewall Connection Security Rules method) against an embedded Strongswan server. I have observed the following behavior:
Phase 2 (...
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VPN for remote access to home LAN (IPSec?)
Another probably daft question:
I am in the process of setting up a VPN connection for the purpose of remote access to services on my home LAN. The router, firewall and VPN server i am using for this ...
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Configure IPsec only VPN on routerOS
For connections from my iPhone into my home network when I'm outside, I configured a VPN based on L2TP and IPsec. I found a lot of examples in the internet for this configuration. All network traffic ...
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Occasional and Momentary Site-to-Site VPN Tunnel Failures
I just started managing a number of locations that have site-to-site VPN connections. Part of what I've been doing is going through the Sophos firewalls examining alerts, findings and incidents. While ...
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Unifi UDM - IPSec VPN PING works but nothing else?
I'm trying to setup a remote syslog solution that is comprised of the following:
Unifi UDM SE --> Site-to-site IPSec VPN Connection --> AWS VPC --> Private EC2 Instance (syslog collector - ...
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Extremely slow transfer speed through IPsec tunnel between 2 locations
I have 2 location with fibre connection. Location A has ~400M down/up whereas Location B has 1Gbps (up/down) shared pipe between 4 offices (total of 15 computers).
Location A has a Windows 2019 Hyper-...
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Trying to find out the best possible network setup to allow IPSec tunneling between networks through Cisco router and DreyTek network device
I'm trying to find out the best possible network setup for my test SOHO network.
My goal is to create a create IPSec tunnel between my network (192.168.68.0/24) and a remote network. The main reason I ...
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Strongswan ipsec tunnel not establishing connection with AAA server
I have two VM
VM-1 : I have installed Strongswan 5.9.
VM-2 : Installed Strongswan 5.9, Installed freeradius (radius server)
I have started Strongswan on both VM by systemctl start strongswan.
When I ...
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NO_PROPOSAL_CHOSEN strongswan ipsec tunnel
Hi I am trying to setup site-to-site vpn tunneling on AWS VMs. Below are my ipsec.conf files for both VMs.
VM-1 (assume IP address : 1.2.3.4)
conn %default
lifetime=60m
mobike=no
...
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Strongswan ipsec tunneling between two VMs
I am very new to VPN and IPsec tunneling. I have two VMs between them I need to establish IPsec tunnel by using pre-defined PSK key or provided certificate .pem.
I have installed strongswan-5.9.6-1....
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StrongSwan 5.9.1 (Debian Bullseye): Traffic from IPsec tunnel gets forwarded via Ethernet, but not via bridge
The following problem:
I have a server that is, in addition to other tasks not relevant for the problem at hand, supposed to act as an IPsec gateway.
When I'm using the Ethernet interface pointing to ...
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VPN Connection (Fritzbox) works for Android Client but not for Windows and Ubuntu
I use a Fritzbox 7530 Router in my home network as a VPN server. The VPN is configured as "IPSec Xauth PSK" with following settings: server name, IPSecID, IPSec shared key, user name and ...
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How to configure strongSwan eap-radius with FreeRadius for EAP-MSCHAPv2 authentication?
I am trying to configure a strongSwan IPsec VPN with RADIUS authentication. The actual EAP-MSCHAPv2 authentication to FreeRadius with OpenLDAP for username/passwords is successful, but then I am stuck ...
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Internal DNS server ignored via VPN
I have the following home network setup:
LAN: 172.16.0.0/24
Proprietary router of my ISP (IPv4, Bridge-Mode -> Bridged to my FRITZ!Box router)
Router & DHCP (FRITZ!Box) -> 172.16.0.1
VPN, ...
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Strongswan VPN certificate authentication failed
I've installed strongswan vpn on my ubuntu server. Set up certificate authentication. I've set up my android-phone and it works fine. But connection didn't established on the windows machine. I copied ...
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Single IP left subnet and routing traffic through tunnel in strongswan
I must set up an ipsec tunnel to use an external service provided by another company (so I have no control on the other side and can't change anything there). Let's say that:
192.168.0.0/24 is my ...
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iptables to nftables for iKEv2 IPSEC VPN server
Can someone please help in converting the below iptable rules to equivalent nftables rules?
I have already tried to use iptables-translate, but it is not translating all of my rules...
# accept ports ...
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VPN 3rd party connectivity: IPsec or SSL VPN and why
I'm setting up a secure remote RDP connection for a 3rd party user to perform maintenance operations on their machine installed in our site.
My frontend firewall is OPNSense and it gives me two built-...
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IPsec conflicting new bare shunt error
While using Libreswan Version 4.3 on RHEL-8, I am getting the following logs while IPsec is blocking all traffics.
How can i resolve these errors of existing connection instance and conflicting ...
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firewalld: Block non-ESP packets on interface in GNU/Linux similar to OpenBSD
I am trying to "enforce" IPSec (StrongSwan) traffic on openSUSE.
On OpenBSD, with the IKE daemon iked and the packet filter pf, I employ a ruleset like the following, to ensure only ...
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How can RDP get secured using IPSec and IPv4, rather than IPv6 on Windows 10
I found this approach to secure RDP-connections on a post at the University of Rostock.
On the Server (W10):
netsh ipsec static set store location=local
netsh ipsec static add policy name="...
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Reliability of UDP over IPsec
I've read about IPsec today. The article stated that IPsec provides security and integrity checks at layer 3. If information above is correct, does it mean that UDP used over IPsec can be considered ...
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"Site can't be reached" when trying to query database from webapp page in IPSEC infrastructure
things are like this:
VM with Windows Server 2012 for asp.net webapp - APPServer
VM with Windows Server 2012 for sql server database(different from 1 - but same network) - DBServer
CLient1 - Another ...
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NordVPN on Draytek 2862 stops working after some time for no apparent reason
So i have a NordVPN account, which i configured on my draytek, it works for the most part but it will suddenly stop working. the connect does NOT drop, it shows as connected and fine, but no devices ...
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Unable to connect to L2TP/IPsec vpn from Windows 10
When I try to connect to my L2TP/IPsec vpn with pre-shared key, I get the following error:
The L2TP connection attempt failed because the security layer encountered a processing error during initial ...
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IPsec and private IP
I'm creating an IPsec / L2TP network and I want to have one server and multiple clients.
On each client, the only way I got IPsec to work properly was to set the IP of the interface that will host the ...
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Define PFS Group in Strongswan IKEv2/IPsec Phase 2 Settings
I am trying to setup a VPN connection on Ubuntu 20.04 using Strongswan. One of the requirements for the tunnel is to use PFS group 20.
Is the PFS group 20 being set when we have the following line in ...
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macos ipsec vpn not using proper dns servers
I've read several articles on DNS resolution over IPSEC using the native VPN client for macos but I can't seem to resolve the issue.
The ISPEC server is pfSense. I have added the proper DNS servers ...
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VPN from Windows 10 to Windows Server 2019
I'm trying to establish a connection between a Windows 10 machine and a Windows Server 2019. On the server side I set up the VPN by these instructions https://www.snel.com/support/how-to-set-up-an-...
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