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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How to automatically assign a route to client in Windows Server PPTP VPN?

Is there a way to configure PPTP VPN on Windows Server which automatically tells the client to add a route for the private network? I have to do it manually on every PC (once) using following command ...
7
votes
4answers
18k views

Windows VPN client connect on different port

Scenario: Two Windows Server 2003 machines running RRAS VPNs. The firewall port forwards 1723 to one of those machines for normal remote access. I'd like to find a way to connect to the second machine ...
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2answers
6k views

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.
7
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2answers
17k views

Connect to Cisco ASA 8.2 VPN with Android 2.1 L2TP/IPsec?

I am trying to configure my Cisco ASA 5510 running software version 8.2 to allow my Droid X to connect via L2TP/IPSec VPN. I have configured the DefaultRAGroup like so: tunnel-group DefaultRAGroup ...
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7answers
45k views

How to setup VPN on home network [closed]

I am a software developer. I travel and sometimes have a need to access my files at home and tweak other family members computers. I would like to connect to my home network via VPN and then RDP ...
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4answers
4k views

Why do VPN connections break when I sleep my computer? [closed]

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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votes
2answers
281 views

Accelerating VPN speed using multiple connections

I have set up a VPS with openVPN running on centOS. The VPN works, but it's too slow. Is there a way to speed this up using open multiple connections like IDM or aria2? I'm using openVPN but I'm ...
6
votes
4answers
6k views

Problems with SCP stalling during file copy over VPN

I have a series of files I need to copy via SCP over a VPN to a remote linux server each night. The files are not large, we're talking about tens of megabytes here, but the file copy almost always ...
6
votes
2answers
6k 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 ...
6
votes
2answers
11k views

VPN can't connect properly

have set up a vpn client on my laptop connecting to a openvpn server on a vps. It was working just fine until i restarted my laptop. I get this connection log in the VPN client: Tue Nov 01 19:25:26 ...
6
votes
1answer
4k views

strongSwan IPsec server with AWS EC2 VPC VPN client

I'm trying to create a VPN tunnel between 2 AWS regions. The way I'm trying to do this is by setting up a IPsec server in Linux with strongSwan in one region, and then a VPC VPN in the other region. ...
6
votes
2answers
5k views

Windows Authentication behaves oddly when VPN'd

We've got a few apps that rely on windows authentication - a couple of web apps with AD auth turned on and we usually connect to our SQL servers with windows auth. This normally runs without a hitch. ...
6
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2answers
2k views

Very low TCP OpenVPN throughput (100Mbit port, low CPU utilization)

I am experiencing extremely slow OpenVPN transfer rates between two servers. For this question, I'll call the servers Server A and Server B. Both Server A and Server B are running CentOS 6.6. Both ...
6
votes
2answers
4k views

pptp (pon) fails when called via cron (debian)

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 ...
6
votes
2answers
1k views

VPN endpoint for my IPhone?

For my company I need to setup a VPN endpoint so that my users can securely login to my network. Can anyone recommend a good server side software product/solution that can allow my Iphones to ...
6
votes
1answer
9k views

Cannot connect to SSTP VPN - Unable to check revocation because revocation server was offline

I have been trying to set up an SSTP VPN to my SBS 2011 server and have been battling certificate issues the whole way. I've been able to generate a new certificate for my external vpn address, ...
6
votes
1answer
5k views

PPTP VPN iptables firewall issues csf [closed]

I am having a problem with iptables and a PPTP VPN, I have read related topics both on hear and online but still can't get it to work! I am trying to set up PPTP on an ubuntu server on our local ...
6
votes
3answers
7k views

Bridging VirtualBox over OpenVPN TAP adapter on Windows

I'm trying to configure a virtual machine (VirtualBox guest running Backtrack 4) with a bridged adapter over a VPN connection. The VPN is is hosted by the cybersecurity club at my university, and ...
6
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2answers
15k views

L2TP client for Ubuntu

It's easy enough to get a pptp client going on a Ubuntu 9.04 (Jaunty) desktop: sudo apt-get install network-manager-pptp However, I can't seem to find documentation find a corresponding L2TP ...
6
votes
1answer
3k 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 ...
6
votes
2answers
9k views

How do I prevent TCP connection freezes over an OpenVPN network?

New details added at the end of this question; it's possible that I'm zeroing in on the cause. I have a UDP OpenVPN-based VPN set up in tap mode (I need tap because I need the VPN to pass multicast ...
6
votes
1answer
1k views

RODC and remote site

I have a two-site domain (call them Local and Remote). Site Local has our main IT infrastructure, including two Active Directory Domain Controllers (2008R2). We're trying to set up an RODC at site ...
6
votes
1answer
8k views

How to route traffic from a VirtualBox VM only over a VPN?

I've got a VirtualBox VM (both host & guest Ubuntu Maverick). My VPN provider uses OpenVPN to setup TUNs. I'd like to set things up so that traffic from the VM only goes over the VPN and is just ...
6
votes
2answers
417 views

What is the best way to secure remote server/tool access from many locations?

I have a number of remote servers I lock down by restricting SSH to specific IPs. Equally, our internal customer admin tools are also locked down by IP. This is fine when working from the office but ...
6
votes
1answer
4k views

How to tunnel all Internet traffic via SoftEther?

My intention is to route all Internet traffic via a remote machine behind multiple NATs. The ISP's NAT servers are not under my control. I do control my own NAT server, which is a local router. Both ...
6
votes
2answers
3k views

Issue routing openswan vpn traffic beyond the server

Trying to set up a openswan based server sitting in an Amazon VPC cluster. The goal is to make it so we can VPN into VPC and have our workstations be as if they were on the network, more of a ...
6
votes
1answer
5k 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 ...
5
votes
4answers
9k 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 ...
5
votes
1answer
44k views

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 ...
5
votes
4answers
8k views

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!
5
votes
6answers
10k 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 ...
5
votes
6answers
12k views

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 ...
5
votes
4answers
414 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 ...
5
votes
4answers
1k 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 ...
5
votes
4answers
1k 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 ...
5
votes
3answers
340 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 ...
5
votes
6answers
3k views

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 ...
5
votes
2answers
2k 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 ...
5
votes
5answers
11k views

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 ...
5
votes
2answers
3k 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 ...
5
votes
5answers
8k 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 ...
5
votes
1answer
198 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 ...
5
votes
8answers
9k views

Force Juniper-network client to use split routing

I'm using the Juniper client for OSX ('Network Connect') to access a client's VPN. It appears that the client is configured to not use split-routing. The client's VPN host is not willing to enable ...
5
votes
2answers
2k views

Differences between SSH's tunnels and OpenVPN

I discovered that recent OpenSSH has support for tun devices. When it comes to tunnels and VPNs, I always thought the main programme was OpenVPN. Are there any advantages to using SSH tunnels? What ...
5
votes
8answers
3k views

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 ...
5
votes
3answers
482 views

How do VPN servers/clients avoid routing their own remote connection packets through themself?

I am trying to conceptualise how networking works under the hood for linux VPNs which use TUN interfaces. My current best guess is as follows (please correct me): Connection established to remote ...
5
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2answers
2k views

OpenVPN bypass on some ports

I have a server running Debian 7 and I would like to connect to a VPN and let all the traffic pass via the VPN except for some ports (SSH, hosted websites, etc). I've searched for some time now in ...
5
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2answers
1k 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, ...
5
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3answers
9k views

ipsec verify on ubuntu Two or more interfaces found, checking IP forwarding [FAILED]

Ubuntu 14.04, Openswan U2.6.38/K3.13.0-30-generic When I run ipsec verify I get this error. Two or more interfaces found, checking IP forwarding [FAILED] I see quite a few of this same ...
5
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2answers
1k 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 ...