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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Do I need a VPN to secure communication over a T1 line?

I have a dedicated T1 line that runs between my office and my data center. Both ends have public IP addresses. On both ends, we have AdTran T1 routers which connect to SonicWall firewalls. The ...
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1answer
9k views

Multiple Set Peer for VPN Failover

I will have two Cisco routers at Location A serving the same internal networks, and one router in location B. Currently, I have one router in each location with a IPSec site-to-site tunnel connecting ...
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2answers
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Automatic connect to VPN in Windows server 2003

I have my VPN set up properly in Windows Server 2003. But there are some issue in it. I have always been scheduled a restart at midnight, when the restart finish, the VPN does not automaticaly ...
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IPv6 routing over VPN

I'm running OpenVPN on Debian Lenny and Tunnelblick on OSX. my goal is to have a fully routed VPN that supports IPv6. the OpenVPN server has a functional 6to4 device, so now my goal is to get the ...
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2answers
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VPN with wrong subnet mask

I followed these instructions on www.hottonetworking.com to set up VPN on a clean install of Windows Server 2008 SP2 (not R2 yet). When I then establish a VPN connection to that machine from a ...
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Simple VPN for iPhone using Windows Server 2008

I have a Windows 2008 server running in country A and I am in country B with an iPhone. Country B censors the internet. Obviously this is not acceptable, I want to make VoIP/Skype calls and access ...
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2answers
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Setting up RADIUS Server for use by a VPN device

Currently we have a Vigor 3300 router that acts as our VPN server. At the moment we set up connections for home workers manually in the device. What I would like to do is remove this extra step and ...
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2answers
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Connecting to TFS over VPN

At work I can connect to the Team Foundation Server (TFS) from Visual Studio and do all the source control etc. that I need to. However, when working from home and connected to work via VPN I cannot ...
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1answer
207 views

Error with a vpn client (PPTP protocole) over ssh

I have some errors when I use PPTP over ssh : sudo ssh -L 1723:127.0.0.1:1723 vpn-server@$192.168.1.1 192.168.1.1 is the vpn server ip. When I start pppd (client) whith the following command : ...
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1answer
875 views

Troubleshoot Broken TCP From OpenVPN Client To Server; But ping, traceroute Work

I'm troubleshooting an OpenVPN Server setup on OS X Mavericks. Prior to the 10.9 upgrade, this all worked, and I'm trying to isolate the problem to something fundamental or my server/client setup. ...
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2answers
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Handling domain joined laptops that are rarely on the local LAN?

We have quite a few laptops that are rarely, if ever, connected to the local LAN. Since they won't be able to contact a domain controller very often, having them joined to the domain doesn't work ...
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2answers
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How to add vpn subnet to a private local subnet (both in different subnet address)?

I set up a xl2tpd vpn server on a router, and assigned the ip range from 192.168.191.2 to 192.168.191.244, and there's local network behind the router's lan side with a 192.168.1.0/24 ip range, so I ...
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How can Bonjour be setup to function over a VPN connection using Mac OS X — Mountain Lion Server?

I purchased Mountain Lion Server for our office thinking that Bonjour would automatically enable any computers connected via VPN to see all computers and applications (such as Bento) running on the ...
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2answers
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Connecting to IPSec/L2tp with OpenSwan/xl2tpd from Windows7 to Amazon EC2

I am trying to connect from my Windows7 at home to my OpenSwan/xl2tpd setup on an Ubuntu EC2 instance at Amazon. It is a connection being NATed from both the client and server ends. I was following ...
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1answer
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PIX 506E, MTU, VPN Packet Fragmentation and Shoretel IP telephone system

We have two sites, a large Southern site and a small Northern site, that have a VPN between them defined on two Cisco PIX Firewalls. Over this VPN Shoretel IP phone traffic travels as well as all ...
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1answer
139 views

terminate ipsec transport at firewall?

I am exploring using ipsec transport mode to provide secure ipv6 access between 2 LANs and several remote users. I love the combo of a flat ipv6 global unicast address space combined with ipv6 ...
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1answer
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Checkpoint VPN on Linux

I need to setup a Checkpoint VPN client with a customer who gave me these settings: Authentication Type: P12 certificate Password: * Peer Site: IP_ADDRESS They tell me the VPN server is: IPSO ...
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1answer
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Iptables: Selective PPTP VPN routing

I've been able to set up TomatoUSB firmware with Ipredator via PPTP, the configuration is as follows: However, I don't want to use Ipredator PPTP VPN for every machine on my network, how to only ...
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1answer
3k views

SSH VPN tunnel without having to enable root

ive been trying to setup a VPN SSH tunnel and ive had success executing ssh -Nv -w 0:0 root@192.168.2.2 -p 50 however what i am wondering is, can i do the tunneling without having root unlocked ...
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1answer
287 views

Forward specific network traffic to other server

Is it possible to redirect incoming traffic on a specific port of my Ubuntu Linux server machine to another server (that has another public IP address and is located at another site)? I'm running a ...
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1answer
557 views

Passing client MAC addresses to DHCP server over VPN

I'm tasked with implementing VPN access on a gateway. The LAN DHCP server is configured to assign the same IP address to a given MAC address. I would like to have this functionality for clients who ...
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2answers
833 views

VPN to a customer's site locking out my local AD account

We have an account lockout policy on our domain which was put in place purely to stop brute force attacks. It locks out an account for 10 minutes after 50 bad logon attempts within a 10 minute period. ...
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1answer
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Do not use VPN credentials to connect to network resources?

I recently deployed a new remote access VPN system at my company, using a Cisco ASA 5510 as the concentrator. The protocol is L2TP-over-IPsec for maximum compatibility across clients, and ...
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1answer
897 views

Site to site VPN : how does the routing work?

I've established a site to site VPN with two Zyxell routers. Site A (LAN: 192.168.16.x) is the main office, and site B (LAN: 192.168.17.x) is a branch office. Both sites are able to reach each other, ...
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site-to-site VPN between cisco ASA and 870 cannot ping remote network

I have two sites which are connected through site-to-site vpn from cisco. One site has a cisco ASA router, the other has a cisco 870 router The tunnel has been setup, and active, however I cannot ...
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1answer
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VPN connection between Endian firewall and Android phones

We have an endian firewall (community, 2.4.0) as gateway, which is already serving as OpenVPN and IPSec endpoint (net-to-net). And we have many Android phones (most of them running Android 2.2 FroYo). ...
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2answers
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Replacement/upgrade for RV082 wired router with VPN access

Current Configuration We have two sites that are connected via a gateway-to-gateway VPN tunnel using Cisco RV082 routers. We also have VPN access using QuickVPN for our Windows employees and PPTP for ...
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2answers
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IPSec Tunnel to Amazon EC2 - Netkey, NAT, and routing issue

I'm working on getting an IPSec VPN working between Amazon EC2 and my on-premise. The goal is to be able to safely administer stuff, up/download data, etc. over that tunnel. I have gotten the tunnel ...
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Accessing MySQL server via VPN in python

Hi I have a MySQL server that I need access through a VPN. I use MySQLdb package to access MySQL server in Python. When I can access the server without VPN, it works fine, but when I'm at certain ...
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1answer
816 views

How can I create a VPN connect/disconnect wrapper around SVN commands?

My company has an internal SVN server (VisualSVN) we would like to start using for keeping track of changes to our python source code in the cloud. The ec2 instances would use the linux SVN client. I ...
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4answers
940 views

Easy to set up 2-factor auth server? (SecureID looks scary to set up) [closed]

I want to use two factor auth for my vpn users. You know, the secureid kind of thing where they have a changing number from a keyfob to enter. I got the free demo kit from secureid and... scary ...
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1answer
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Site-to-Site Tunnel between Cisco Router and Windows Server 2003/2008

Has anybody successfully created an IPSec site-to-site tunnel between a Windows Server 2003 or 2008 and a Cisco router? We tried the steps outlined at: ...
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3answers
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Linux IPSec issue. (CentOs 5.3, manual keying)

I'm creating an IPSec tunnel from a Linux box to a SonicWall firewall running standard firmware. The tunnel seems to be getting created just fine, but packets from the Linux box to the remote network ...
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2answers
521 views

OpenVPN: Where sould the private key be generated?

A friend of mine says that the keys (private and public) for the clients shall be generated at the server and somehow delivered to the client when setting up a new client for an OpenVPN based network. ...
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2answers
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End-to-Site VPN from IPv4 -Host to IPV6 (only) - Site

I want my IPv4 only Clients to my IPv6 only Site. I have a dualstack Server which I could use as a gateway. There is a Question somewhat related here: IPv6-only client to IPv6/IPv4 dual stack server ...
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1answer
374 views

AWS StrongSwan IPSec VPN

I've been playing around with StrongSwan recently as a replacement to Amazons VPN which cost money. I'm having trouble completely configuring a IPSec tunnel between a remote server and a Ubuntu EC2 ...
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1answer
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VPN error 619 - “A connection to the remote computer could not be established.”

Have been trying to get this PPTP VPN working on a CentOS 6 x64 VPS for a few days but im getting: "Error 619 - A connection to the remote computer could not be established." I did research on ...
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1answer
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How do I configure pfsense as an outbound VPN client?

We use pfsense as a router/firewall. Because we're based in China, it is useful for us to have VPN access for all our internal clients. Instead of each individual client connecting to a VPN server ...
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1answer
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OPENVPN route all traffic - Synology

I have a synology NAS that is my OPENVPN server. I am always on the road and I want to route all of my traffic through my house. Here is my config and my log. config file dev tun tls-client ...
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2answers
265 views

How to setup router on desktop linux to provide access to vpn subnet to other local machines?

I have a desktop linux (Ubuntu based 12.10, laptop, 1 network card) from which I connect to work vpn via standard pptp, so I can access local network and work network from the machine. On the desktop ...
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1answer
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Configuring VPN on Windows Server 2008 with no DHCP

Please see the revised section at the bottom as the original question seems to have been a little convoluted I have a cloud based virtual machine from my client's hosting company. The sole ...
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1answer
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Site to site VPN between Cisco VPN Router and Sonicwall NAT issues

I'm trying to establish a site-to-site VPN connection from office to datacenter. Cisco RV042G and SonicWall NSA2400 In the office; we have the subnet 10.0.0.0/24 defined and hosts from 10.0.0.150 to ...
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1answer
1k views

Set source address to use tun device does not work (Debian Squeeze)

There have been similar questions on StackExchange but none of the answers helped me, so I'll try a question of my own. I have a VPN connection via OpenVPN. By default, all traffic is redirected ...
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1answer
783 views

selective routing through a VPN tunnel

The problem: after establishing an IPsec VPN tunnel all traffic is routed to the remote endpoint, while I only need to route the packets destined to that internal network and still be able to access ...
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1answer
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No TCP connections to hosts behind VPN server (SYN, SYN-ACK, but no ACK), UDP, ICMP works

I'm probably doing something incredibly stupid, but I just can't seem to figure out what. Here's what I'm trying to accomplish: I want remote users to be able to log into our network, so I set up a ...
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2answers
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Force Windows to Stay Connected to Microsoft VPN when User is Logged Off

I have a Windows Server 2008 at a remote office location that needs to stay connected to the main office via VPN (standard Windows PPTP connection) even when there is no user logged in. Right now, ...
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How do I get internal hosts to use a VPN connection set up on a FreeBSD router?

Question in short: How do I get traffic from a host on an internal network, using NAT behind a router, to use a VPN connection set up on the router? I have a FreeBSD 9 router with 4 network ...
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3answers
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VPN or RemoteDesktop?

I need to keep an eye on our small company server while I'm away. I Have Windows2008 server with a spare NIC and went through all the steps to setup a WIndows VPN. But before I set the port forward ...
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1answer
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Watchguard L2TP over IPsec passthrough

I'm attempting to connect to a VPN (L2TP over IPsec) server through (not to) a WatchGuard XTM 505 appliance. I have the VPN server setup behind the firewall on a 1-to-1 NAT, and other protocols (such ...
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3answers
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IP Phone over VPN - one way calls unless default route?

I have come across a strange problem with our VPN and BCM 50 (Nortel/Avaya) phone system. As you can tell by my other questions I have been doing some work on setting a VPN up from one location to ...