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Vpn Error 721 The Remote Computer Is Not Responding

If any of the certificates in the chain have been revoked, certificate validation fails. I changed the LAN-to-LAN to "L2TP over IPSEC", which continued to work, and then I turned off PPTP as an endpoint on the router, allowing it to forward all that to To do this, perform the following steps: Click Start, click Run, type regedit, and then click OK. You need to allow port 1723 TCP for PPTP and GRE, IP Protocol 47. check my blog

Therefore, the only difference is > that > > I > > > > am using a pingable IP address which happens to belong to the router > > > instead You need to allow port 1723 TCP for PPTP and GRE, IP Protocol 47. Can it be an ISP related issue? A firewall between the VPN client and RRAS server If there is a firewall between a Windows L2TP/IPsec client and an RRAS L2TP/IPsec server and you cannot establish an L2TP/IPsec connection, go to this web-site

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. 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 This doesn't explain why I could still somehow log onto the server from work, or why I couldn't log onto the router endpoint at the remote site, but I don't care For example, we would use IPs: => assigned as the router's public IP => => ** doesn't like this ** => =>

Or was this exactly what you had interpreted from my previous posting and I am simply missing what you're stating? Copyright © 2014 TechGenix Ltd. I never thought of that possibility. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States.

Ask a Question Question Title: (150 char. Additionally, the authenticating server verifies that the identity sent in the EAP-Response/Identity message is the same as the name in the Subject Alternative Name property of the certificate. Similar Threads RRAS + NAT + VPN == 721 error...Yikes! Another software who creates network interfaces are virtual machines managers like VirtualBox or VMWare.

Everything works > perfectly, > > > > EXCEPT PPTP (VPN) connections. Privacy Reply Processing your reply... BTW should I open GRE from any to any or just fron any to may ISA server external Interface?TIALfber (in reply to LGR) Post #: 3 RE: Error 721 The remote To check that the VPN server is listening for VPN traffic on the appropriate port numbers, on the RRAS server, from the command line, type:netstat -aon For example, if PPTP is

But the reply goes through the same > channel as above, so the reply doesn't have this IP in the packet. Any other service will work perfectly when NATed regardless from which IPs static public IP's they come in. Following Follow VPN issue Thanks! But when I try to VPN connect to external IP it hangs with message "verifying username/password" and then I get "error 721: Remote computer did not respond".

We > > have approximately 32 public IP addresses, hence why we use Multi-NAT for > > routing public services to internal servers. click site For example, we would use IPs: > > => assigned as the router's public IP > => > => ** doesn't like this ** > By default, Windows 2000 remote access VPN clients have the Automatic server type option selected, which means that they try to establish an L2TP/IPsec-based VPN connection first, and then they try a Post your questions, comments, feedbacks and suggestions Related Topics VPN error code VPN Browsing Issues VPN Logon Issues VPN Name Resolution VPN as Router VPN Routing Issues VPN TCP/IP Settings Ports

VMC, which does not rely on GRE is also affected. From you > > original posting, I admit I couldn't see any reason for the problem you > were > > having. > > > > Now that I see you To fix this case, you can set the same registry key shown in the previous procedure on the Windows 7 client to configure EAP to use ANSI. news Usually 721 just indicates that GRE is being blocked.

If either the PPTP VPNor L2TP IPsec VPN type is selected, verify that the VPN server supports the selected tunneling protocol. The MTU of the DG834 has been changed to match the Draytek. Keep us posted 4,585 pointsBadges: report Stevesz Feb 27, 2011 11:31 PM GMT I am not sure that you guys are actually reading my problem here.

Cannot connect to the server- Error 789 The l2tp connection attempt failed...

The content you requested has been removed. Promoted by Recorded Future Enhance your security with threat intelligence from the web. First let me explain the problem. > > > > > > The Problem: > > > > > > It can take up 6 retries for any remote user to Follow Us!

Finally, to trust the certificate chain offered by the authenticating server, the VPN client must have the root CA certificate of the issuing CA of the authenticating server certificate installed in When PPTP connections are made, the connection comes in and back out the same router (this I made sure). Copyright © 2002-2015, All rights reserved. Privacy Reply Processing your reply...

Each issuing CA maintains a list of certificates that should no longer be considered valid by publishing an up-to-date certificate revocation list (CRL). By submitting you agree to receive email from TechTarget and its partners. To view the CRL distribution points for a certificate in the Certificates snap-in, obtain the certificate properties, click the Details tab, and then click the CRL Distribution Points field. rejohn Long Path Tool help me a lot when i have an issue like file deleting or renaming the file.

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 Why was Vader surprised that Obi-Wan's body disappeared? Thanks. For whatever reason, > > this solved our problem with connecting to the RAS server.

They both have their own separate WAN connection (we use a lot of bandwidth, hence the need for two WAN connections). Can it be an > > ISP > > > related issue?