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Unable To Connect To Vpn Error 721

Can it be an > ISP > > related issue? Like I said, it can take up to 6 retries to successfully > > connect > > > to > > > > our RAS servers (up to 30 retries if For example, we would use IPs: > > => assigned as the router's public IP > => mail.mydomain.com > => ras2.mydomain.com ** doesn't like this ** > I have an NT 4.0 SP6a RRAS server behind a Linksys DSL NAT firewall that allows PPTP passthrough to a DMZ host. Check This Out

Log In or Register to post comments Paula Sharick (not verified) on Aug 2, 2000 I've seen articles about VPN disconnection in Microsoft's Knowledge Base, and I suggest you search there. By submitting you agree to receive email from TechTarget and its partners. We have approximately 32 public IP addresses, hence why we use Multi-NAT for routing public services to internal servers. After you configure the client, you need to verify that the VPN server has a connection to the Internet. https://support.microsoft.com/en-us/kb/888201

My problem apparently resulted from unmatched service packs­--SP4 was on the NT server, and SP6 was on the workstation. The Automatic Private IP Address 169.254.x.x will be assigned to dial-in clients. This is a safety > measure to prevent spoofing a reply. > > So I suspect that, with your previous setup, the reply was coming from a > range of different Now that you use > a > > fixed IP, it always works. > > > > Incidently, you do not need to forward port 47.

  • Cause of Error 721 Point-to-Point Tunneling Protocol uses Generic Routing Encapsulation (GRE) for tunneled data and the error may occur if the network firewall does not permit the GRE protocol traffic.
  • If so, I apologize. > > ~Frank > > "Bill Grant" <> wrote in message > news:%... > > Hi, > > > > First off, I am glad to hear
  • Are you a data center professional?
  • We no longer > > have > > > to retry up to 6 times to successfully connect. > > > > > > Conclusion: > > > > > >
  • We'll email youwhen relevant content isadded and updated.
  • The settings on the Win2K and NT clients are identical.
  • Remember, routers and firewalls can prevent the transmission of NetBIOS names unless you enable unicast traffic on UDP ports 137 and 138 and TCP port 139.
  • Establishing VPN server Internet connectivity.

If the client still can't browse, try connecting from the client to a network share. The server and the client could ping each other and a basic connection would occur, but then the error message would pop up almost immediately. The vpn connection works without the router in the equation, but does not work when I add the router back into the equatoin. Second, Win95 might overwrite the ISP gateway with the VPN server-defined gateway when the client connects, so the client has no path to the Internet.

Once uninstalled I have been able to connect to the vpn network again. We have struggled with this for a year now. All comments welcomed. > > > > > > ~Frank > > > > > > > > > > > > Bill Grant, Aug 27, 2003 #3 Frank Guest visit Usually 721 just indicates that GRE is being blocked.

This has led me to believe that the problem is entirely with the one machine. I am thinking that something may have happened that tore up the networking components of Windows somewhat, and this is what is causing the problem. 2,015 pointsBadges: report Subhendu Sen Feb However, it doesn't like that, I have to use the router's IP (meaning I have to point ras2.mydomain.com to in our DNS servers) and then forward PPTP to the RAS We have 32 "static" IP addresses from our ISP.

If the server responds by address and name but you still can't connect, your ISP's routers or internal routers or firewalls might be filtering GRE packets. However, the remote PCs are using the DG834 as their DNS/DHCP/etc. This > > was ONLY an issue with the PPTP service. Using the router's "real" IP and port forwarding works, because the > client sends the request to the router's IP.

If the gateway still points to the ISP, every client request to browse the LAN goes to the ISP rather than to the VPN connection, and the ISP might block ports http://fullflash.net/unable-to/unable-to-connect-wow-error-2.html Configuring a multihomed server. vpn pptp share|improve this question asked Feb 5 '10 at 15:28 Andrew C Ok, I've tested the VPN from one of the PCs from the other domain which is Log In or Register to post comments ­Ted Orme (not verified) on Dec 13, 2000 Well done!

Can you point me in the right direction? Like I said, it can take up to 6 retries to successfully > connect > > to > > > our RAS servers (up to 30 retries if the remote user Log In or Register to post comments andrew nesbeth (not verified) on Nov 27, 2002 I am trying to connect a remote PC to my network, using Microsoft 2000 server (central) this contact form www.chicagotech.net/vpnissues/vpntools.htm

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I'm an IT manager for a 220-seat company with about 40 remote users, and I've seen a lot of problems as users experiment with Windows 2000 at home and try to Thanks. The machine that is trying to connect times out verifying user name and password.

We > > have approximately 32 public IP addresses, hence why we use Multi-NAT for > > routing public services to internal servers.

If you have patience and fortitude, run Network Monitor and watch the remote link. There > have been a few problems with PPTP from time to time with funny error 721 > problems. Is there a developers image of 16.04 LTS? Why is it @ 9600 & not 50k?

I suspect a problem with one or more of the Windows networking components on this machine. 2,015 pointsBadges: report saturno Feb 28, 2011 4:03 PM GMT Fine, What was the I have a cable modem, and installing a regular modem interferes with the cable modem. The type of network they form with their clients is a Bridged network. navigate here www.chicagotech.net/vpn.htm VPN troubleshooting tools VPN Troubleshooting Tools. 1.

About Us PC Review is a computing review website with helpful tech support forums staffed by PC experts. I've specified an IP address on the client to use for the VPN connection, and at the server I've allowed the prerequested IP. For whatever > reason, > > > this solved our problem with connecting to the RAS server. Finnaly, considering that XP *is clean*, try to rebuild the TCP/IP stack issuing this command: netsh int ip reset where filename is any filename.