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VPN Troubles, Error 721 etc

Last response: in Windows XP
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Anonymous
April 15, 2004 1:26:05 PM

Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)

Hello, I'm working on seting up a VPN connecting and having many problems. Ill try to include as much relivant information as possible:

I've been working over the past week or so to setup a VPN between our Home Officer network and my step-sisters Home network so she can work there instead of runing back and forth. However, after many hours and even more headaches i still cant seem to get it working. I was configuring it connect to 2003 server but because i need to set it up on other XP Pro computers later i opted to try XP instead.

The network(server side) consists of a Linksys BEFVP41 V2(vpn cable/dsl router) and a Wireless A+G router. Currently i have the vpn router setup as the gateway, the wireless is set in router mode. All ports(even on both routers) VPN uses that i am aware of are forwarded to the server computer( PPTP/L2TP-IPSec pass-throughs) prot 47 and 48-50, ports 1723 and 500 are forwarded(for both TCP and UDP). I have ports forwarded on the client end as well(its useing a bellsouth dsl modem/router, i dont have specific information on it with me at my location) i beleive.(however i am unsure, are there any specific client side ports i need to open besides 1024-65524 range?)

When i attempt to connect i receive error code 721 every time. I've checked everything and so far i dont beleive there is a firewall runing blocking ports anywhere. Norton is installed on all machines but no firewall is setup or enabled. Windows personal firewall are disabled on both ends as well as the router firewalls. I attempted to test DMZ hosting out to see if it was a problem with the routers but it wouldnt even connect to the IP at that point(i receive a different error at this point, saying it couldnt connect and the server may be unreachable). I can succesfuly ping every computer and both routers here on the office network as well asn ping the remote clients IP.

The server connection has a static IP, the client is dynamic, our ISP(BellSouth) does not block VPN traffic either. I've looked over more or less every single guide on Linksys/Cisco/Microsoft sites as well as reading over every arictle here related to VPN. I cant think of much else, however i will include my inconfig/all info as well for both the client and server(as well as the default router).

Server:

Windows IP Configuration

Host Name . . . . . . . . . . . . : Katrina
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connecti
on
Physical Address. . . . . . . . . : 00-09-6B-8B-44-50
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.140
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 205.152.104.252
205.152.37.254

Client:

Windows IP Configuration

Host Name . . . . . . . . . . . . : devivo1
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Network Bridge (Network Bridge):

Connection-specific DNS Suffix . : launchmodem.com
Description . . . . . . . . . . . : MAC Bridge Miniport
Physical Address. . . . . . . . . : 12-C6-05-F4-85-A3
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.2.95
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.254
DHCP Server . . . . . . . . . . . : 192.168.2.254
DNS Servers . . . . . . . . . . . : 192.168.2.254
192.168.2.254
Lease Obtained. . . . . . . . . . : Wednesday, April 14, 2004
4:14:36 PM

Lease Expires . . . . . . . . . . : Thursday, April 15, 2004 4:14:36
PM

Remeber, the server side network is runing on a wireless router connected to the main(vpn) gateway router.

Any help would be greatly appreciated, ill be checking back often.

Thanks, Chris M.

More about : vpn troubles error 721

April 15, 2004 8:38:56 PM

Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)

On Thu, 15 Apr 2004 09:26:05 -0700, "=?Utf-8?B?Q2hyaXMgTS4=?="
<anonymous@discussions.microsoft.com> wrote:

>Hello, I'm working on seting up a VPN connecting and having many problems. Ill try to include as much relivant information as possible:

Have the person at the remote computer watch the Local Area Connection
for hits when you attempt to connect. He can do that by opening the
Status window and then Details. He will see the packet count increase
as hits come in.

If you can make it to his machine in terms of hits, then obviously the
router is letting something thru. You should decide which VPN you want
and set up everything for just that VPN. if you choose PPTP, then
configure the router for forwarding port 1723 and protocol 47. You do
not want to forward port 1723 to but one machine - the VPN host.

If you do get hits then it is likely a firewall issue. Even though you
have closed the firewall icon, the engine can still be operative. You
have to "Disable" it.

Look under "msconfig" to see what is running. Yank out everything that
is suspicious. In all my experience with PPTP, it has almost always
been a firewall that has caused the problems.

If you want a friendly firewall, get Kerio - it's free for home use.
It will self-configure as it discovers attempts to get thru, like
protocol 47.





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--David Crockett
Anonymous
April 15, 2004 8:38:57 PM

Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)

Thanks for the reply, ill try that. If not i suppose it could be a firmware issue with the routers also.
Anonymous
April 15, 2004 10:01:06 PM

Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)

Updating the firmware on my router fixed the problem.
!