VPN Advice

Posted on 2010-11-29
Last Modified: 2012-05-10
I just wanted to post to gauge people's experiences with VPN and remote desktoping. We are a SME with several remote workers. I used to use ISA as our VPN server, however I didnt like the interface. I now use the built in server on our Draytek 5510, along with the draytek client, which simplifies things and gets around a lot of the problems with the windows client.

My experience of vpns is that they are a bit lethargic, presumably due to encryption/packets arriving our of order. Every now and then, we'll get a freeze that will take a minute to come back to life, and every now and then you'll get a drop out.

These are all things that I can live with (I remember running rdp over dial up)., however there are people senior to me who do not see this as acceptable, so I must now seek a resolution.

Could I ask, do other people have similar issues connecting to their VPN networks?
Any gems of wisdom as how I can improve VPN stability/throughput, and can anyone recommend different methods of remote desktopping?

Many Thanks
Question by:noooodlez
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 11

Assisted Solution

DIPRAJ earned 50 total points
ID: 34229707
LVL 79

Accepted Solution

lrmoore earned 150 total points
ID: 34229753
I gather that you already know how to set up the VPN on the Draytek, so I won't bother posting blind links to useless information.
We use Cisco products with ASA 5500 series as primay VPN device and it supports multiple VPN clients. It is probably the #1 solution in the world for any "must work" situations.
The AnyConnect client gives you much control over the end user device, not simply user login credentials.
The IPSEC client is zero additional cost and just plain works.
You can also use a clientless VPN with an RDP plugin
You can use your Windows AD for authentication.

Assisted Solution

Ravenbridge earned 150 total points
ID: 34230524
We have installed a number of 5510s for various clients, normally coupled with the Draytek 120 ADSL modem. We haven't experienced any major drop outs or resets with VPN clients, but most of our networks are using the Draytek Lan-Lan facility, rather than the Draytek VPN client.

It is always worth updating to the latest firmware version if you are having any issues with performance.

The only VPN problems we have encountered with remote workers is when using 3G connections.

If you have the luxury of spare desktops at your site, you could use a remote control system such as Logmein. We use the free version and rarely have any problems. It is also faster than a VPN tunnel. There are a number of others eg Gotomypc and Logmein Pro which provide more features at a cost.
LVL 70

Assisted Solution

Qlemo earned 150 total points
ID: 34232728
We use a lot of VPN solutions, including some clients (and Cisco one of them) forced into a routable scenario, and the only issue we have is with MTU.

RDP does either work or not; if the MTU is an issue, you get no connection or disconneted very fast.

There should not be much of a lag, or even drop-outs - it is quite unusual that you experience that. Maybe the DrayTek lacks the resources to keep up many VPN tunnels, or you chose an encryption which is only performed in software instead of hardware. Or upstream bandwidth does not suffice for sending the necessary ACKs, which leads to overly much resends.

Featured Post

Portable, direct connect server access

The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Preface Having the need * to contact many different companies with different infrastructures * do remote maintenance in their network required us to implement a more flexible routing solution. As RAS, PPTP, L2TP and VPN Client connections are no…
OpenVPN is a great open source VPN server that is capable of providing quick and easy VPN access to your network on the cheap.  By default the software is configured to allow open access to your network.  But what if you want to restrict users to on…
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question