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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VPN within a Remote Desktop session

I connect to a server on my local network via Remote Desktop. I then need to make a VPN connection out to the internet from within that Remote Desktop session. However that immediately disconnects my ...
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1answer
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IPsec VPN site-to-site: How should I configure the ipsec.conf files on both sites to get the tunnel up?

What I am trying to do is to create a site-to-site IPsec VPN between my network and my friend's network. We both have a router and two computers on each router, with all computers running Linux. So I ...
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5answers
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Can Wake on LAN work on VPN connection?

Is it true that we can’t allow any machine to sleep that may need to be accessed var a VPN connection? (I am asking this on server fault as it is as much about VPN servers as about the end user PCs ...
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4answers
343 views

How secure is limiting site access by IP? [closed]

I'm currently developing software which requires various remote sites to securely connect to our servers to access a basic webapp. Up until now, I've been working on a client/server VPN setup - it's ...
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4answers
832 views

Why VPN when I can just use SSH keys?

A friend of mine installed VPN on our LAMP development server. Previously, we just used SSH and sometimes SSH public keys to avoid password prompts. My question is, what is the advantage of using ...
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6answers
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Have one application use VPN while others do not in Linux?

I want one application to use a VPN connection while others do not. I'm using Xubuntu (thus XFCE) but I'd like a command line / static configuration solution if it's possible. Is it possible to ...
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3answers
261 views

Network isolation with IPv6

It is my understanding that network address translation (NATing) goes away with IPv6. How do we isolate network resources to those that need them from the rest of the internet? I am specifically ...
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5answers
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Improving VPN performance - stronger encryption = more performance?

I have a site-to-site VPN set up with two SonicWall's (a TZ170 and a Pro1260). It was suggested to me that turning off encryption (so the VPN is tunneling only) would improve performance. (I'm not ...
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1answer
160 views

What is a “VPN Consolidator”

A client recently mentioned using a VPN consolidator for remote access to their server. I've never heard this term used before. Is it some type of slang that I'm not familiar with? I did a bit of ...
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Cisco VPN Client on Vista - Virtual Adapter

I have used the Cisco VPN client for years, and on XP it is pretty much rock solid, on Vista, not so much. You might be able to connect, but unless you set up a constant ping to something, it usually ...
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2answers
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pptp (pon) fails when called via cron (debian) [solved]

I have a pptp VPN link dialing from my (debian) linux server here, to an ISA2003 server at a remote site. The internet connection at (both) ends is somewhat dodgy, so I have written a little script ...
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2answers
789 views

How to Configure Secure Connectivity between Multiple Subnets

I have the following setup 2 x linode vps 1 x lab (physical) running 4 vps My goal is to make it so all nodes act as if they are on the same LAN. This will allow me to alter IPTable rules, to allow ...
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4answers
24k views

Windows VPN always disconnects after < 3 minutes, only from my network

First, this problem has existed for almost two years. Until serverfault was born, I pretty much gave up on solving it - but now, hope is reborn! I've set up a Windows 2003 server as a domain ...
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3answers
2k views

How do I route a public IP range over an IPSEC VPN?

So, I have an established IPSec Site to Site tunnel. Site A has a SonicWall, Site B has a EdgeRouter. The first tunnel consists of Site A's NATed ips to Site B's NATed ips. Everything works as ...
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3answers
2k views

What's going on with this strange MTU?

I have a server mike at our office communicating with a remote server through a VPN. There have been various problems which seem to be linked to the MTU size. Mike is a RHEL 3 server and the customer ...
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3answers
13k views

Can't resolve host through VPN connection from Mac OS X

The Preamble I set up a VPN connection from my Macbook, and it seems to connect successfully. However, I can't access my work computer because hostname doesn't get resolved: $ ping myusername ...
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1answer
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Direct connection between multiple clients on OpenVPN

I've spent my entire day learning about VPN, and have been working with following setup: 2 VPS Servers at the same data centre in Texas. (Texas1 and Texas2), 1 VPS in England and 1 VPS in Atlanta and ...
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2answers
4k views

Windows Server 2008 R2 as VPN Server

I'm going to be setting up a network at a data center and I was wondering if it's possible to have Windows Server 2008 R2 act as a VPN server. Also, I've heard there are 3 main types of VPN: PPTP, ...
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3answers
2k views

Making an ASA TFTP backup through VPN

I have a site to site VPN configured between two ASA 5520s. I have a TFTP server behind ASA1, with an IP of 172.16.1.1 on the "inside" network. I'd like to be able to copy the running config of ASA2 ...
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2answers
372 views

How to correctly configure DNS usage in Ubuntu? Authoritative answers without RA flag are ignored

I have latest clean Ubuntu 14.04.1 64-bit from official website installed in Virtualbox. I connect to a VPN network using vpnc that sets 2 DNS servers using DHCP: user@virtual:~$ cat /etc/resolv.conf ...
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2answers
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Where can I download the latest 64-bit edition of Sonicwall SSL-VPN NetExtender for Windows 7?

Does anyone know where to download the latest edition of the 64-bit version of SonicWall SSL-VPN NetExtender for Windows 7?
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3answers
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Cisco 877 as a VPN server?

I have a Cisco 877 router which connects my network to the Internet using an ADSL line, a single public IP address and NAT; the IOS version is 15. Everything is working ok, but I'd like to configure ...
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1answer
455 views

Remove Server 2012 Remote Access Server

My IT director was walking me through setting up a Server 2012 VPN/RA server. We did not do this in our test environment, and now I would like to remove it. I know that when installing this server it ...
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1answer
6k views

Strongswan vpn tunnel connected but the traffic is not routed through it

I have just set up a vpn tunnel site-to-site with strongswan (4.5). The tunnel looks fine and connected to the other side, but seems there is a problem routing traffic through the tunnel. Any idea? ...
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2answers
150 views

Connecting to basic office network from the outside

Back Story: I work in the IT Department for a company that got its start by being given space to work out of from a warehouse when my company first got its start about a decade ago. Ever since then, ...
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1answer
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Ubuntu Connect To SSTP VPN

Does anyone have any experience with connecting an Ubuntu 10.10 machine to a SSTP VPN server? I haven't found anything too great of information on how to do it.
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1answer
307 views

VPN server on Windows Server 2008 for a small office

I'm going to refurbish the IT-infrastructure for a small organization with one single office, and I'm not sure what VPN server to use. In your opinion, would the built-in Windows Server 2008 VPN ...
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2answers
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How do I setup virtual networking Xenserver?

I'd have a network like this currently. Basically, It's two Xenservers connected to our colocation provider's switch via one ethernet cable per server. Each server currently has a second ethernet card ...
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2answers
824 views

Can't access database server over VPN

I am attempting to connect to an Oracle server via a VPN. I have tried to do so, unsuccessfully, from OSX and, alternately, from a Windows XP VM machine (VMWare Fusion) running on OSX. I can, ...
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1answer
749 views

Windows Server 2003 IPSec Tunnel Connected, But Not Working (Possibly NAT/RRAS Related)

Configuration I have setup a "raw" IPSec tunnel between a Windows Server 2003 (SBS) machine and a Netgear FVG318 according to the instructions in Microsoft KB816514. The configuration is as follows ...
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8answers
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File transfer problems through VPN when Cisco IPS is enabled

We have a Cisco ASA 5510 firewall with the IPS module installed. We have a customer that we must connect to via VPN to their network to exchange files via FTP. We use the Cisco VPN client (version ...
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15answers
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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
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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
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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
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“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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4answers
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Why do VPN connections break when I sleep my computer?

On the limited (Cisco) VPN systems that I've used, the VPN connectivity is broken when my computer is put to sleep and must be re-established on wakeup. Is this a necessary property of VPN?
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2answers
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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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4answers
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What is difference between OpenVPN and PPTP?

I know PPTP is based PPP, so what is the openVPN based on ? can the packets of openVPN be routed by ubuntu server ? thanks!
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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
412 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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5answers
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HTTPS vs. VPN for communication between business partners?

A business partner has asked to set up a site-to-site VPN just so that a few servers can communicate with each other over HTTPS. I'm convinced this isn't necessary, or even desirable. To be fair it ...
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4answers
710 views

Reaching a Linux server with a private IP without VPN

I'm working on a network where I can't obtain a public IP address or set up VPN access. Is there a way that I can communicate with a local server remotely by using an intermediary in the cloud that ...
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5answers
961 views

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
2k views

OpenVPN DNS Fails to Resolve

I am connected to an OpenVPN server that is configured with the options to redirect the VPN as the default gateway and to push my internal DNS servers: push "dhcp-option DNS 192.168.1.2" push ...
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3answers
771 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 ...
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3answers
4k views

Why Can't OpenVPN GUI add routes in Windows 7?

Good-day all, I'm having trouble getting the OpenVPN GUI application to add routes to a Windows 7 client. I'm using the same config file I've used on a Windows XP client except that I added the ...
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1answer
547 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
1k 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
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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 ?