Solved

Error 800: Unable to establish vpn connection

Posted on 2009-07-02
4
465 Views
Last Modified: 2012-05-07
I have an sbs2003 server with 2 NIC's (one wan and one LAN).  I am running the standard sbs2003 firewall.  VPN was working one day and then failed the next. Rebooting the server does not fix it. Restarting RRAS does not fix it. I always get the same error on my XP workstations when I try to connect in. Error 800: Unable to establish vpn connection. This happens from multiple workstations in multiple locations.  I can use RDP and OWA and RWW on the sbs2003 with no problem.  I can telnet on port 1723 and get a blinking cursor.  If I run  netstat -an |find"1723" it responds with
tcp     0.0.0.0:1723     0.0.0.0          listening

But I always get the error 800 now when I try to connect.

 
0
Comment
Question by:degoodwin
4 Comments
 
LVL 7

Accepted Solution

by:
spamster earned 500 total points
ID: 24764465
This site makes a few suggestions:
http://www.howtonetworking.com/vpnissues/error800.htm

1) if you have firewall, open TCP Port 1723, IP Protocol 47 (GRE).
2) make sure you can reach the VPN server by using ping.  Sometimes, poor connection can cause this issue too.
3) You may need to update the firmware on a router or firewall
4) The VPN server may not be able to get IP from DHCP for the VPN client. So, you may want to re-configure VPN host networking settings. Go to the Properties of the VPN>Network, check Specify TCP/IP address and Allow calling computer to specify its own IP address, and uncheck Assign TCP/IP addresses automatically using DHCP.
5) Make sure no other secure software blocks your access. For example, if you use Norton security software, you may need to add the remote client's IP so that the client can access.
6) If your VPN running on a Windows RRAS with NAT enabled, you may want to check the NAT settings.
7) Make sure no security software like Microsoft OneCare software that blocks the GRE.
0
 
LVL 9

Expert Comment

by:DCMBS
ID: 24764481
Try the following link which has troubleshooting steps for error 800

http://technet.microsoft.com/en-us/library/cc772616(WS.10).aspx#BKMK_1
0
 
LVL 12

Expert Comment

by:marcustech
ID: 24764497
Are you telnet'n from outside of the local network? Is port 1723 forwarded on the router's NAT firewall?

If not you will neet to connect to the routers config page from the server (type http://<router ip address), whilst in a remote session to the server.

From there you will need to configure the firewall to forward port 1723 to the servers IP address.
0
 

Author Closing Comment

by:degoodwin
ID: 31599232
PRoblem was an update to AVG 8.5 reset the firewall on all 3 reomte computers and they blocked the vpn access. reset the pots and it worked.
0

Featured Post

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
AWS VPS as AD Server 2 65
ASA - RV130 VPN tunnel, cannot pass traffic 8 68
Set time on server to sync with the internet clock 22 72
2008 SBS renaming user accounts? 3 41
You may have discovered the 'Compatibility View Settings' workaround for making your SBS 2008 Remote Web Workplace 'connect to a computer' section stops 'working around' after a Windows 10 client upgrade.  That can be fixed so it 'works around' agai…
When you start your Windows 10 PC and got an "Operating system not found" error or just saw  "Auto repair for startup" or a blinking cursor with black screen. A loop for Auto repair will start but fix nothing.  You will be panic as there are no back…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), 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…

777 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