IPSec is a method to provide internet security over the layer 3 of the OSI model.

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L2TP/IPSec stopped working after openssl upgrade

VPN connections from my MacBook / iOS devices to a Debian server having openswan / xl2tp were working just fine until I used apt-get to upgrade everything due to openssl heartbleed announcement. Now ...
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1answer
26 views

IPSec with or without L2TP?

I'm referring to this question. And to be clear: This is really not about the old PPTP vs L2TP debate. ;-) I successfully set up racoon as an IKE server without any L2TP implementation running and it ...
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15 views

Make ICMP exempt from IPSec protection

I'm reading a reference book on Microsoft DirectAccess. It contains the quote: To use Ping as a troubleshooting tool, ensure that Internet Control Message Protocol (ICMP) is exempt from IPSec ...
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50 views

IPSec Policy Is Blocking 127.0.0.1

I created an IPSec policy on Windows 8.1, it's purpose was to allow only traffic that goes via the VPN, everything else should be blocked (except LAN and 127.0.0.1). LAN is working fine, but 127.0.0.1 ...
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15 views

Can I run a VPN server with certificates only, and no password/pre-shared keys?

I've seen several writeups around discussing VPN server configuration. In all of them, there are 2 or 3 pre-shared keys / passwords used at various levels of the tunnel -- one for IPSec, one for ...
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27 views

Shrew VPN with Cyberoam security gateway

it is possible to establish a VPN tunnel with Shrew VPN to a security gateway Cyberoam ? (Ipsec / SSL) I can not establish the tunnel.
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91 views

How can I set an IPsec ID using the Windows 8 built-in VPN client?

I'm trying to connect to a VPN using the built in Windows 8 VPN client. The VPN uses L2TP/IPsec and a pre-shared key. I can see it's connecting to the VPN but not making it through authentication. I ...
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248 views

In Windows, Is there any way to connect to IKEv1 IPSec server, without using L2TP tunnel?

My server uses StrongSwan to host an IPSec server using IKEv1. Platforms such as Android, iOS, MacOS natively support IPSec connection without using external client application. Windows 7 and 8 seem ...
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1answer
51 views

Logging VPN Traffic (L2TP/IPSec on Ubuntu)

I'm running a small, private VPN server for me and 2-3 other people. For bandwidth monitoring, and to comply with any possible DMCA or other government (re: new Canadian law) requests, I want to have ...
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57 views

Logging VPN Access (L2TP/IPSec Ubuntu)

I'm running a small, private VPN server for me and 2-3 other people. For bandwidth monitoring, and to comply with any possible DMCA or other government (re: new Canadian law) requests, I want to have ...
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175 views

Automatically reconnect Openswan/IPSec VPN and disallow intermittent traffic?

I am trying to connect two Debian machines running an Openswan/IPSec tunnel. Also, I want to disallow any traffic when the tunnel goes down. For that purpose I wrote a script the fiddles with routes ...
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17 views

Assign user from outside the company to access without creating a profile?

I have set up a VPN using Win 2008 server and assigned group policy to the user who already been added to the Active Directory to access from outside the company specific services. What do I need to ...
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85 views

Slow SCP tranfers over IPv6 VPN IPSec which has IPv4 private subnets

I have 2 hosts connected with IPv6 VPN. I am using IPv4 internal addresses for machines connected internally and use subnets addressed for these in ipv4. When a host wants to scp a 1 Gig file pull ...
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1answer
165 views

How is it possible that I can't login to various websites when using a VPN at a public Wi-Fi? That same VPN is just fine when connected from home

This is a full IPSec tunnel provided by my university. I use this VPN at home and at public Wi-Fi caf├ęs. For some reason, I am not able to login to most websites while using the VPN at this specific ...
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1answer
200 views

VPN ipsec tunnel from router to single windows server computer (gateway-to-host)

Firstly, is this possible? The situation: 2 different ISP's. One has several servers and a firewall running. The other is limited to only one virtual server with one network card running windows ...
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1answer
711 views

Strongswan IPSEC VPN for Windows 7 road warrior config

Following the Strongswan wiki link for configuring Strongswan for Windows 7 clients: http://wiki.strongswan.org/projects/strongswan/wiki/Win7EapMultipleConfig I used the sample files as-is with no ...
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2k views

Openswan l2tp ipsec vpn on Ubuntu 13.04 for remote access (Android road warrior). Does not work

I followed the directions from here: http://samsclass.info/ipv6/proj/proj-L5-VPN-Server.html I used the same exact files as posted at that site. On my router, I have port-forwarded 500 UDP and 4500 ...
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230 views

Recover L2TP/IPSec Preshared key

I want to recover my L2TP/IPSec Password, which is somewhere stored in my Computer, but I do not know where it is saved. I use this to connect to my VPN connecion, I tried lots of password Recovery ...
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525 views

Mikrotik IPSec VPN routing

I seem to be clueless at the routing with VPN. I am trying to setup an IPSec VPN tunnel so as to secure communication between my private LAN and a destination host. Any device within my private LAN ...
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1answer
533 views

Is my VPN tunnel connected? Is my traffic going via the VPN tunnel? How do i verify this?

From RHEL i have to connect VPN server and reach that target PC1. Till now it was possible to make the VPN interconnect but 10.0.0.108 cant ping 10.109.0.200. Variables: ME WAN IP: 8.8.8.8 (Amazon ...
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41 views

Configuring VPN in a router which supports IPSec

I want to create a VPN for my own use. I see that my D-Link router supports IPSec. Is it possible to configure a private VPN if IPSec is supported? How to setup a private VPN in a router and use it in ...
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1answer
1k views

Find the IPsec ID and Secret id for my vpn connection

Hi i'm using ubuntu and new to cisco vpn anyconnect client. I have installed it successfully and establish the connection by giving the user name and password. But it is showing the timeout error. So ...
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107 views

Configure L2TP IPSec on Mac using command line

I have a bunch of IPSec VPN servers I'd like to add on several mac clients ... is there a one-line I can execute from the console, or a simple way to do this in an automated fashion to save time? ...
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167 views

How to set up IPSEC on Linux using low-level tools like setkey?

Suppose I have a host and VM connected using virtual network. I done: host# ip -6 addr fc::1/120 dev eth0 host# ip link set eth0 up vm# ip -6 addr fc::2/120 dev eth0 vm# ip link set eth0 up How to ...
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98 views

Forward IPsec tunnel from IPv4 endpoint to IPv6 endpoint

I have a new ISP and only have a Dual Stack - lite connection now. That means I can't access my router via IPv4 anymore, since the external IPv4 address is private. I have native IPv6 connectivity. ...
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37 views

Nat IP to another

Is it possible for me to NAT one IP to another, I'm connecting in site-to-site VPN via windows2003 machine it have different IP say 172.19.0.1 and I'm required to present my IP as 192.168.x.x on the ...
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1answer
169 views

VPN for Home to watch TV on the go

My ISP offers TV on tablets, phones, etc. where I have to use an app, but I still have to have that traffic flow through my modem. What would be the best solution to setting up a VPN for probably just ...
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153 views

How to make cisco VPN client work on win 7?

I've managed to setup a IKEv2 VPN(EAP-MSCHAP v2) for my win 7 64bit, everything works all right and the connection is made through native VPN setups in win 7. But right now I want to make it work for ...
2
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1answer
1k views

Finally get my win 7 connected to strongSwan VPN, but there's no Internet

I believe I've followed all the instructions, and my win 7 did get connected, but there's no Internet. Background: Server OS: ubuntu 12.04 on linode xen VPS strongSwan Version: 4.6.4 ...
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1answer
498 views

How to set up NAT in windows server 2008 r2 for IPSec tunnel use

I am having troubles setting up the whole IPSec tunnel thing. What i have: 1. Router that only has a VPN/IPsec passthrough functionality (IP 192.168.0.1) 2. Windows Server 2008 R2 which has group ...
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3answers
2k views

IPsec VPN connection drops automatically every 47 mins

I'm using Cisco Systems VPN Client Version 5.0.07.0440 to connect to VPN server through IPSec/UDP. Btw, the OS is win 7 ultimate 64 bit The problem is each time when it connects, I always got such ...
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0answers
372 views

Cisco RV180 ipsec vpn to mac os x 10.8.2 default client Configuration

I would like to configure an IPSec VPN tunnel between my RV180 (server, last firmware) and my Mac OSX 10.8.2 laptop. I have little knowledge about VPN, and a bit more about network in general. I have ...
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2answers
1k views

Can't connect to pc using Remote Desktop over VPN with Domain user account only

Craziest thing. I can't seem to login to my pc at work using my domain credentials. I am using Remote Desktop with a Cisco VPN and have tried both Mac and Win 7 remote machines. It appears that I can ...
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0answers
1k views

How do I configure DD-WRT to forward IPSec traffic to an internal server to support a road warrior configuration?

I use dd-wrt as my home router setup and that's been working fine. Now I wanted to figure out a way to be able to use my iPad to set up a IPSec tunnel to my home network while I'm on the road. PPTP ...
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1answer
332 views

Is it possible to set up IPSec on a linux virtual machine host to connect to an Azure virtual network

We run some virtual machines in an onsite Ubuntu based server with guests being a mixture of Windows Server and Ubuntu. We're also setting up some Windows Azure virtual machines and ideally would like ...
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82 views

Netgear NAT over LAN TO LAN

I have the following question: I need to connect through a vpn IPsec lan 2 lan tunnel with a partner but they want that I connect through a specific ip subnet which is not mine. Here's the situation: ...
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2answers
49 views

Find out what routers are crossed when accessing a server!

I am new to this forum and not really sure if I this belongs here, but I give it a shot anyway. What routers/switches/networks does a packet from my computer need to cross in order to access a lets ...
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182 views

M0n0wall IPsec tunnel fails after switch to PPPoE

I have had a M0n0wall site-to-site IPsec VPN working for several months on a static IP via an ADSL router. We've just switched to a fibre (FTTC) connection, and M0n0wall has now been configured to ...
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1answer
1k views

Allow all websites for administrator account and block all websites (but a few) for limited accounts

At my work we have a PC which runs Windows XP and is used by all employees. This PC is mainly used for our company website: a trailer booking website. At the moment there is one account: an ...
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1answer
713 views

How to stop split tunnelling over cisco VPN (OS X)?

I'm using OS X (Snow Leopard) and the built in Cisco IP Sec client to connect to my corporate VPN. Currently, everything works as designed, and desired for most people. However, I would like to be ...
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420 views

Shrew Soft VPN Client - Negotiation timout

I am having an issue running Shrew Soft VPN Client on Windows 7 Pro x64. While trying to resolve this issue I have disabled miniport adapters like a lot of websites say to do however this hasn't ...
1
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1answer
859 views

Cisco ASA5505 site-to-site VPN doesn't establish tunnel to remote peer

The remote peer can start the tunnel successfully when accessing my local network like pinging a local host, however, the tunnel cannot be automatically started from the local side. The log shows no ...
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1answer
254 views

Relation of IPSec and IPv6 to SSL/TLS

My understanding is that IPSec is a security layer added inside the IP protocol to make IP itself a secure transport. My understanding of IPv6 is that it is the newest version of IP that will (for ...
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40 views

IP header “Option field”

Is it true that the GRE (Cisco tunnel) header is placed in the IP header "option field" ? Are the IPSec headers (ESP or AH) installed in the "option field" too ?
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5k views

How to use IPsec?

IPsec is a protocol suite built on top of IP. Originally designed with IPv6, it also exists in IPv4. IPsec enables encrypted communications between hosts at the IP level (that is, upper layers ...
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1answer
1k views

Openswan L2TP/IPsec VPN for iPhone fails during connection

I spent the morning trying to configure an L2TP/IPsec VPN using Openswan and xl2tpd on a Debian Squeeze server for use by a mix of iOS and Mac clients. I am trying to set it up using pre-shared keys ...
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1answer
612 views

How do I configure a Netgear FVS336g for use with Amazon VPC?

I think it should be possible to create an IPSec tunnel between a Netgear FVS336Gv2 firewall/router and AWS VPC however, I've been unable after several tries. How do I setup a connection for a Amazon ...
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3answers
701 views

IPv6 and IPSec - why do I need an external daemon?

I read that IPSec is mandatory for IPv6 implementations. Does this mean that it should be handled by the OS and that IPSec configuration should be mandatory for IPv6 to work? If so, why is this not ...
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2answers
108 views

IPsec counter mode - are there implementations?

Counter mode encryption is potentially more robust against lost packets. It is used in SRTP. I assume that if I use counter mode, a lost packet causes a lost UDP packet or TCP retransmission instead ...
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219 views

OS X: how to figure out what prevents L2TP/IPSec from running correctly

It seems that an old installation of Cisco Anyconnect prevents the OS X built-in L2TP/IPSec client from running (I posted a question here: OS X 10.7, can't log into any L2TP VPN server, but didn't ...