VPN is the acronym for Virtual Private Network - a network type that uses a the Internet to provide remote networks or single machines with secure access to their organization's network avoiding expensive leased lines.

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What is “the meaning” of this `ip route`?

I'm slowly learning more about IP routing and the ip toolset by investigating a VPN. After I start a particular VPN client, one of the (new) routes displayed by ip route show is 128.0.0.0/1 via ...
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9 views

DNAT in Shorewall not working for VPN

I have a firewall (10.8.0.1) connected to an internal server (10.8.0.2) via VPN. On the firewall the VPN interface is called tun0. So in my shorewall configuration I have this: $ cat interfaces #ZONE ...
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1k views

Help with OpenVPN setup on Windows Server 2003

Just wondering if someone can assist me further with the set-up of OpenVPN on my Windows Server 2003. I have configured Win Server as per the following guide: http://tinyurl.com/kxusv and I'm now at ...
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ubuntu xl2tp ppp0 not properly handling the DF flag (Packet Corrupt) while sending packages > defined MTU

While trying to setup an Ubuntu Linux server as a client to an l2tp/IPSEC server, I notice inconsistencies while trying to send data. The tunnel/VPN establish the connection / handshake properly and ...
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2answers
36 views

OpenVPN server only gives username/password and client requires certificates

We have a eFive OpenVPN server which gives me a CA cert, usernames and passwords for the account. In addition, I have a RUT550 LTE router, from Teltonika, whose OpenVPN client setting allows static ...
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2answers
2k views

VPN PPTPD with MPPE Support for Debian or Ubuntu

Having an unencrypted vpn connection from a windows client to linux is pretty easy by using pptpd. When I was looking for an solution for encrypted (per MPPE) connection, I found a lot of information ...
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34 views

Deploying SSTP VPN on Windows 2012 - How to route packets to other servers?

I've finally managed to deploy an SSTP VPN between my Windows 2012 (non R2) server and Windows 7 client. It's amazing how much easier it work with a real certificate and avoiding the self-signed ...
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10 views

amazon aws ec2 setting ppp vpn server POSTROUTING eth3 failed

I use amazon aws ec2 to setting ppp pptpd vpn server. I have two interface is eth0 and eth3. And the iptables -t nat -A POSTROUTING -o eth0 -s 192.168.1.100 -j SNAT --to-source 10.0.0.233 is working ...
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39 views

Change source IP for packet incoming in VPN tunnel

The following configuration allows me to change the source IP from 192.168.0.0/24 to 172.16.0.100 when hosts going to 10.0.0.100 and it works. But I can't achieve this goal for the hosts incoming from ...
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1answer
40 views

Load Balancing VPN servers (Ubuntu)

I am trying to load balance two VPN servers, that are located quite far from one another. I am using Ubuntu with pptpd, is there anyway to load balance those two servers? So user connects pptp to ...
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3answers
1k views

IPSec VPN Shrew to Fortigate

I'm trying to configure an IPSec VPN on a Fortigate 80C and connect to it using Shrew Soft VPN. I'm stuck with a negotiation failure, even though debugging on the Fortigate unit shows the same values ...
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13 views

VPN connected machines don't keep ports open

I have a Windows 2012r2 machine set up as a VPN server with 5 clients connecting (4 via PPTP and 1 via L2TP). I am using icinga2 to monitor these remote machines and am able to successfully do so ...
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72 views

Joining two networks over internet with same ip range

We have two offices in a single Windows 2003 domain and sharing same IP range (no overlapping). Every office has its Microtik router as gateway. Thing is, first office has a solid wired internet ...
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1answer
3k views

L2TP/IPSec from Windows 7 to ASA 5520

I am trying to setup L2TP/IPSec on our ASA5520 to support a fringe case for one of our developers. The Windows VPN subsystem apparently stores the kerberos or NTLM cookie for the login when you use ...
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2answers
980 views

Bad WAN Transfer Speed (Windows Server 2008 R2)

We have two servers in different data centers which are geographically separated by several hundred miles. The RTT (round trip time) for a ping between them is 61ms over our VPN. Both servers are on a ...
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1answer
2k views

How to route traffic over an active VPN tunnel by domain name?

I set up a VPN tunnel to my web server targetting its FQDN: (e.g. my.server.com) using the built-in Windows 7 VPN feature and the built-in Windows 8 Routing and Remote Access (RRAS) VPN feature. How ...
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1answer
1k views

How do I resolved “Error 13843: Invalid Payload Received.”?

When Windows 8 tries to connect to my Strongswan VPN I get the following error, Error 13843: Invalid Payload Received. I'm not sure how to resolve it or what causes it. My charon log has this, ...
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9 views

How can I inform Mac OS and iOS clients of VPN routes? [migrated]

On my home network (10.0.0.0/24) I have my Macs and iOS devices (the others don't matter). LAN clients gain IPv4 and IPv6 (native) access via an Airport Extreme (AEBS) connected to a cable modem on ...
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10 views

Can you set openvpn to automatically connect to 'falllback' ovpns in case current one fails? [migrated]

I'm in Debian 7.8 Wheezy, and have installed openvpn from the stable repository. I'd like to set up a system for another user (who does not have high computer literacy) where, if the primary server ...
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1answer
427 views

OpenSwan + AWS + Ubuntu 14.04 - Cannot reach server

i'm currently trying to set up a VPN in order to login into a private subnet hosted on AWS. The target host has Ubuntu 14.04 and installed OpenSwan. I've setup ipsec.conf, ipsec.secrets, xl2tpd.conf, ...
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1answer
21 views

VPN tunnel from client A through relay B to server C

I need to send traffic from a client machine, A, to a VPN server, C, but through a relay host, B. All three of them have public IPv4 addresses, but for policy reasons, A must not send traffic ...
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1answer
2k views

Fortigate VPN Routing issue

I have 200B Fortigate unit with 2 internet WAN connections. I also have a remote site which I'm connected to via IPSEC VPN through WAN1. This site has only one GW IP address. I'd also like to setup a ...
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3answers
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Windows 8 - no internet connetction to some hosts while VPN is active

I use VPN to access the servers at work. When VPN is used, all network traffic to the Internet passes through my company network. It worked without any problems on Windows 7, now on Windows 8 some ...
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pfSense - Site to Site OpenVPN

I have two pfSense 2.1 servers running with LANs of 192.168.0.0/24 and 192.168.10.0/24. The pfSense servers are 192.168.0.1 and 192.168.10.1 I just configured an OpenVPN site to site tunnel, that ...
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1answer
133 views

Windows 7 VPN to OS X Server error 629, Tried a lot of options

I am having a hard time connecting to my office server in which I am the admin of. I have recently wiped the hard drive and re-installed os x yosemite with os x server. I use a Windows 7 machine at ...
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4answers
14k views

VPN is working, except for DNS lookups. Firewall (Cisco ASA 5505) issue?

I've got the following set up: LAN -> DHCP / DNS / VPN server (OSX 10.6) -> Cisco ASA 5505 -> WAN Connecting to the LAN via VPN works fine. I get all the details properly and I can ping ...
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5answers
10k views

How to prevent Hamachi service stop when Remote Desktop disconnects on Windows XP?

I have a Windows XP SP2 machine with Hamachi service running. Usually I connect to it using Remote Desktop, and when I disconnect I can't connect to it again because the Hamachi VPN is down. How to ...
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21 views

Access ProxyChains thorugh local socks5 server

This question is a bit tricky but on it's basis I simply want a scenario where I can use my proxies just by connecting to 1 socks5 server from everywhere on my local network and don't have to worry ...
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1answer
32 views

VPN client acting as gateway for the rest of the LAN

To have a simple scenario, let's say we have: Office: Four computers running Debian and another computer running CentOS. HQs: A Debian running the VPN server which is located at the central HQs. ...
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2answers
2k views

Microsoft SSTP VPN returning HTTP 503

So I have finally set up my certificates correctly and such, so I'm trying to connect to my VPN. The Windows client is giving me an error with the code "0x800704D4". I looked into it and was told to ...
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40 views

Routing VPN traffic between two networks

I have recently set up a two-network bridge using OpenVPN (Connect two networks with OpenVPN) The following things work: -Pinging any Network 2 computers from Network 1 Gateway (10.0.1.9) -Pinging ...
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1answer
60 views

recover IPSec VPN preshared key

So I have set up L2TP VPN connection which uses preshared key. I remember both login and password but not preshared key. Is there any way in Windows XP/7 to recover it?
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1answer
8k views

OpenVPN connected but not internet access on the client

I've setup OpenVPN following this tutorial, and everything works fine except that I don't have an internet connection on the client while connected to VPN. ...
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2answers
3k views

How to make an OpenVPN connection over pptp connection in ubuntu

I need to connect to my ISP's server using pptp. And then I need to connect to the private network at my office using OpenVPN. OS: Ubuntu 10.10 How can I make such connection? Thank you.
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27 views

VPN-tunnel renegotiation problems

I have an application running on top of Celery with redis as a broker. Redis is hosted at our datacenter but the workers are hosted on a separate line. We have setup two-way communcation between the ...
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1answer
47 views

Nameserver delegation to private subnet

I'm currently having some problems delegating a subdomain, e.g. lan.example.com, to a nameserver in a private network. My private network is split in to subnets 192.168.0.1/24 <--- 192.168.0.1 ...
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3answers
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OpenVPN and DNS. How to?

I'm using OpenVPN to set up a VPN to connect my laptop at home to my workplace LAN. I want to be able to refer my workplace computers by their name and not by their IP but I can't. This is my ...
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37 views

Routing for NAT and site-to-site VPN with RRAS

I'm trying to set up a split-tunnel site-to-site VPN using an RRAS server that is currently doing NAT. Right now, the NAT works: all clients are assigned an IP address in the 192.168.2.0/24 range, and ...
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2answers
83 views

Connect two networks with OpenVPN

I am trying to connect two networks together via OpenVPN. Gateways can ping each other, however they cannot access other computers on the network they're joining. Logs don't show any errors, and the ...
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4answers
15k views

How to connect to a Juniper VPN from Linux

The Windows users have a new client "Juniper Pulse" to connect to the Juniper VPN server. On Linux, what VPN client do we have to connect to that Juniper VPN, with maximum compatibility? Please ...
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1answer
75 views

Configure ufw pptpd and dnsmasq on the same server

I've got a an ubuntu 14 server running both pptpd and dnsmasq. I'm having trouble configuring ufw to allow pptp clients to resolve their DNS queries using the local dnsmasq server. I've correctly ...
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2answers
52 views

In an OpenVPN network, Windows clients cannot access the host and other clients

I have set up an OpenVPN network and I'd like to let every client in the network be able to connect to each other, ie. servers 10.8.0.1, 10.8.0.2 and 1.8.0.3 should be able to communicate over VPN and ...
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1answer
83 views

AWS Override VPC DHCP - Additional Option Sets for RRAS VPN Clients

I am trying to run a RRAS VPN server that pulls from a windows DHCP server running on the same box. I am finding that the AWS DHCP is getting hit first with the DHCP request and it provides invalid ...
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33 views

ocserv: How to identify a connecting user?

My ocserv auth mod is certificate. I knew from the sample config file that ocserv could provide a connect-script which has REASON, USERNAME, GROUPNAME, HOSTNAME, DEVICE, IP_REAL, IP_LOCAL, IP_REMOTE ...
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37 views

VPN server with mitmproxy

I have a mitmproxy script I want to run on all incoming VPN HTTP/HTTPS traffic, however, I am not sure how to achieve this. Is there a linux VPN daemon that allows me to redirect traffic to a ...
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17 views

DirectAccess Multiple Subnet Deployment

I am looking at doing a DirectAccess rollout on AWS using a single Server 2012 R2 instance behind an edge device. My clients are mostly running Windows 7 Pro/Ultimate, but there will be some other ...
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1answer
20 views

Is there an option to connect to the VPN before logging in using the SonicWall VPN Client?

I read that there is an option in Windows XP and with the Cisco VPN client to logon to the VPN before logging into the machine; is it possible to connect to the VPN using the SonicWall VPN client ...
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1answer
118 views

Cannot RDP into Windows 7 over VPN

The exact scenario where it fails: I am unable to RDP into any Windows 7 or 2008 R2 servers within a certain subnet, while connected to the network via VPN. Windows 7 Client connected through the ...
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1answer
1k views

number of hops using tracert over vpn

I work for a small tech company that is signing up a new client that has two locations connected via a site to site VPN. If I run tracert from one pc to another pc at the remote office, there are no ...
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1answer
39 views

RRAS Site-to-Site VPN Issues When Behind Edge Devices

I have two networks I would like to bridge using PPTP using Windows Server 2008 R2 on both ends. Network A is 10.150/16 subnet without DHCP available Network B is 192.168.150/24 subnet with DHCP ...