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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Replacement for Linksys WRV54G? [closed]

I work at a small company that has two offices, each with its own Business DSL connection to the Internet. In order to create a LAN between the two offices, my predecessor purchased and installed two ...
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11answers
4k views

Small business firewall/VPN device [closed]

What's a good small business (<50 users at a location) firewall and VPN device? Wireless would be a nice addition, and I'm thinking of something in the $1,000 range. This would be for businesses ...
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3answers
9k views

Best way to create a vpn between two windows machines?

I'm looking for way to create a VPN between two windows machines. I want the installed software to behave as if the two computers are connected through a LAN. What's the best (free) way to do it? ...
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4answers
8k views

“Primary” DNS when there are multiple network connections

I have a machine that has a LAN network connection, which is used for internet access. This machine also has to be connected to a VPN connection. When the VPN is connected, Windows seems to ask the ...
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2answers
975 views

What is the recommended way to permanently connect two remote linux based environments together?

We have a linux based environment hosted remotely and a few spare machines in the office. I'd like to use those machines as workers for the remotely hosted application though they would need permanent ...
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8answers
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How difficult is it to setup Mac OS X Server?

We are a small office of about 4 people, and we would like to have a 27-inch iMac (Core 2 Duo) setup as a server and workstation simultaneously, using Mac OS X Server. This might seem like overkill ...
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2answers
609 views

VPN Security: unknown users trying to connect PPTP VPN

I've configured a PPTP VPN in a small company which so far is running well. In the VPN logs, they've found several logs of attempted connections from unkwoun users, one attempted connection every ...
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2answers
5k views

Is it possible for L2TP VPN to do auto route configuration for client during connected?

We've setup a L2TP VPN server with this tutorial, everything works like a charm. The only issue is We don't want client to route all traffic using this VPN, only a particular subnet, e.g. ...
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3answers
57k views

How do I get SonicWALL Global VPN to work with Windows 8.1?

I have been running SonicWALL Global VPN v4.7.3.0403 on Windows 8 without trouble for more than a year. Today I upgraded to Windows 8.1 RTM and noticed that it disabled my Global VPN connection. I ...
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5answers
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Tips and Suggestions IP Address Re-Addressing?

My ever evolving and expanding local area network is currently using a class-C address. My network consists of multiple subnets depending on site/location. 192.168.1.x is site HQ 192.168.5.x is ...
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2answers
14k views

Connecting to a remote server through a VPN when the local network subnet address conflicts with a remote network

This is a Canonical Question about solving IPv4 subnet conflicts between a VPN client's local network and one across the VPN link from it. After connecting to a remote location via OpenVPN, ...
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2answers
9k views

Is there a way to stop relaying network traffic through VPN?

I have been experimenting with VPN lately, and I managed to get it running on W7 PC. The problem is, though, that as soon as someone connects to my PC, the internet traffic from their PC is routed ...
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3answers
823 views

How secure is a VPN connection over WiFi?

I travel a lot and connect to public wifi hotspots all the time. What information will be given out if I use VPN within public wifi hotspots? Will the owners or intruders in the hotspot be able to ...
4
votes
2answers
527 views

stunnel vpn traffic and ensure it looks like SSL traffic on port 443

I am trying to make my outgoing and incoming traffic look as legitimate as close to SSL traffic as possible. Is there a way to DPI my own traffic to ensure it looks like SSL traffic and not OpenVPN ...
4
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1answer
754 views

Renting a IPv4 address block [closed]

I am building a lab network with about 10 virtual routers and 20 host machines (also virtualized) as a part of a school project. The aim is to demonstrate a wide range of IPv6 routing, deployment and ...
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3answers
2k views

Tunneling all TCP and UDP traffic through a Server?

On a Linux or Windows system, how would it be possible to tunnel all TCP/UDP packets through a thirdparty server? What would one use, does it work with SOCKS5, OpenVPN or SSH?
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3answers
4k views

Does Windows 7 VPN work with a Cisco ASA 5510

We have a Cisco ASA 5510 router and are trying to get a couple users setup for VPN access. They are running Windows 7 x64 at home and cannot install the VPN client we have for our router (it only ...
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3answers
2k views

What is difference between L2TP and PPTP?

I need a high performance VPN server, who can tell me the difference between L2TP and PPTP ?
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4answers
4k views

VPN server on Arch Linux

Trying to set up a VPN server on an Arch Linux box. All I want is for it to be usable by OS X and iPhone OS. I'm a noob at VPN and can't seem to have much luck googling. What software do I need to ...
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4answers
10k views

How can I speed up file transfers over VPN?

Our VPN users experience very slow file transfers (50MB can take 20 minutes with a 20Mbps FiOS connection on each side). If the file is transferred over HTTP or FTP, it's just as fast as you expect. I ...
4
votes
1answer
487 views

Can my ISP know that I am connected through a VPN?

I have a general understanding of VPNs and how they work. However, I am not sure of how the initial request is seen by my ISP? For example say I am connected to an OpenVPN provider, what happens when ...
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6answers
32k views

Fortigate VPN client “Unable to logon to the server. Your username or password may not be properly configured for this connection. (-12)”

We're running a Fortigate 100D, and having some trouble with the SSL VPN via FortiClient. I installed FortiClient on an external Windows 7 PC a few days pack and the SSL VPN connected and worked. I ...
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2answers
1k views

OpenVPN Chaining

I'm trying to set up an OpenVPN "chain", similar to what is described here. I have two separate networks, A and B. Each network has an OpenVPN server using a standard "road warrior" or "client/server" ...
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3answers
2k views

Is a cloud-based domain controller behind a VPN feasible?

I'm considering setting up a windows domain controller in MS Azure within an Azure virtual network. Goal is to be able to centrally manage GPs and users. Is this even feasible, since the client ...
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2answers
1k views

Bypass openvpn for particular ip

My desktop machine runs Trisquel GNU/Linux 6.0 (which is basically a libre version of Ubuntu 12.04), and I use OpenVPN to connect to a commercial VPN provider for internet access. It currently routes ...
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2answers
4k views

Force SSH connection through a different interface

I want to connect remotely using SSH. However, I'm not able to while my VPN is active, so I disconnect from the VPN and then connect using the other connection. How can I force the connection ...
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2answers
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VPN trace route

I am inside an Active Directory (AD) domain and trying to trace route to another AD domain at a remote site, but supposedly connected by VPN in between. the local domain can be accessed at ...
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2answers
9k views

Connect to a Fortinet VPN with Ubuntu

I don't know a lot about VPNs but I'd like to connect to a Fortinet VPN with Ubuntu. I can connect on Windows using Forticlient just by entering the policy server (vpn.theserver.com) and then it asks ...
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2answers
7k views

How to make iPhone Cisco VPN client work with ASA with certificate authentication

I have an ASA that's providing IPsec VPN services using certificate authentication (no xauth, just the certs). It works perfectly with the Cisco IPsec VPN Client. Now I'm trying to let iPhones ...
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4answers
4k views

P2P VPN: cross between Hamachi and OpenVPN

I recently started using OpenVPN. It is useful because you can securely connect many clients from different networks. However, when two clients communicate, they are not directly connected but they go ...
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2answers
365 views

Can BIND alter a response based on requesting IP address?

Hello Serverfault, I work for a hospital who set up their network using 192.168.0.0/23 (before I arrived). We are wanting to have laptops and mobile clients connect from remote locations using VPN, ...
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3answers
11k views

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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5answers
2k views

SSH remote access vpn tunnel

I have two machines both running CentOS linux, one is public facing machine with a real ip address (foo). The other is at a client's site behind a very restrictive firewall and with no real ip and no ...
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1answer
2k views

What is the difference between Microsoft VPN and Cisco VPN

What is the difference between Microsoft VPN and Cisco VPN? Are they just separate implementations of the same protocol? I seem to remember hearing somewhere that they were not compatible with each ...
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5answers
5k views

VPN server on Google Compute Engine with OpenVPN

I'm trying to use Google Compute Engine server as VPN server for all my traffic (I'm living in Russia, we have some issues with censorship here). There is mini-tutorial about VPN on GCE, but it's ...
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4answers
5k views

pfsense 2.0.2 racoon(ipsec vpn) unreliable

I'm having issues with racoon (ipsec VPN) on pFSense 2.0.2 (and 2.0.1). According to racoon all my tunnels are up (I have about 130 of them), but over time more and more of them won't pass traffic ...
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6answers
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Free or very Cheap VPN server software with high concurrent users count [closed]

I'm hoping to implement a VPN whereby about 200 concurrent users can log in to briefly access my network. I had a look at OpenVPN and this seemed excellent, but was hoping that there would be a less ...
4
votes
1answer
4k views

Which ports to forward for a VPN server that sits behind a firewall?

Question pretty much says it all. From what I have found, it seems that port 1723 is the main port to forward, but I also see numerous references to others ports. The server that is hosting the VPN ...
4
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1answer
1k views

MULTI: bad source address from client - any one-off solutions?

Setup: I have the an openvpn client/server setup (config files at bottom), and I get the infamous MULTI: bad source address from client [192.168.x.x], packet dropped message at server. The server has ...
4
votes
1answer
2k views

Software VPN connection to Amazon AWS VPC private instance [closed]

I have a Virtual Private Cloud (VPC) instance on Amazon AWS. Inside the VPC, I have a private instance which is running the database and a public instance which has the front-end web pages for ...
4
votes
2answers
941 views

What should I use instead of MS-CHAP v2?

There's a new tool and service that makes it very easy to break MS-CHAP v2, which is used to secure VPNs. A good summary of the attach against MS-CHAP can be found at Ars Technica. Here's the way I ...
4
votes
1answer
516 views

Is it possible to connect two IPSec site-to-site VPNs to one Windows 2008 Server?

I need to connect to two IPSEC site to site vpns from a Windows 2008 Server at the same time. Is it posible? I tried to assign two IP Security Policies, but it seems I can only have one assigned at ...
4
votes
2answers
322 views

remote network access to LAN devices - VPN/LAN

I have several energy meters (with a web server embedded) distributed in many buildings, all these sensors are connected to the local network so that can be accesed through a browser to see the real ...
4
votes
1answer
3k views

Simplest possible VPN to Amazon EC2 instance

I have setup an EC2 instance (Windows Server 2008) that I will let different developers connect to. Since I want the connection to be secure I am trying to setup a VPN connection to that machine, but ...
4
votes
2answers
4k views

iOS/Mac-Compatible IPSec VPN Server on Ubuntu

I pay for a VPS from a Xen VPS host and the load on it is fairly light, so I'd like to run a VPN off of it. The configuration I'm shooting for is "roadwarrior"-style, as I'd like to use it to secure ...
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2answers
5k views

Mac OS X PPTP VPN issue ping: sendto: No buffer space available

The VPN connects successfully but after some time the connection is unusable (VPN is used as primary gateway). Ping would reveal: ping: sendto: No buffer space available This looks like the same ...
4
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3answers
263 views

Optimal SVN server configuration for personal use

I have a desktop machine that is currently set up as an SVN server. Currently I have it set up to be accessible via http (using Apache), but only for the local network, as I wasn't confident in my ...
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2answers
2k views

Script logon to a 'Cisco' VPN in windows

I would like to sync my development database with actual data from the production databases on a regular basis (say, weekly). I already have the scripts to do this, and the amount of data is not huge. ...
4
votes
2answers
20k views

Can't establish PPTP VPN windows 8/8.1

I am having an issue where I keep getting either error 800 or 807 whist trying to connect to a VPN server via PPTP on Windows 8 and 8.1 pro. The server itself is Synology's VPN Server running on a ...
4
votes
1answer
3k views

VPN server not responding, no indications of blocked traffic

I have a Mac OS X Server (10.9) machine running a L2TP/IPSec VPN server. Configuration appears to be fine, and the hostname of both the server and the VPN is set to a DynDNS hostname. The server is ...