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Vpn Error 721 Remote Computer Did Not Respond

For example, we would use IPs: > > > > 208.38.4.101 => assigned as the router's public IP > > 208.38.4.102 => mail.mydomain.com > > 208.38.4.103 => ras2.mydomain.com ** doesn't like U need to configure network firewall to permit the GRE (Generic Routing Encapsulation) protocol 47 (if u use the same). We have struggled with this for a year > > now. > > > For whatever reason, it struggles to make a successful connection to our > > RAS > > I am not sure if I am clear on this? check over here

By the way, the router's IP is the only pingable public IP, not that that should make any difference at all. We'll email youwhen relevant content isadded and updated. Register now while it's still free! Join & Ask a Question Need Help in Real-Time? https://support.microsoft.com/en-us/kb/888201

Red Flag This Post Please let us know here why this post is inappropriate. Remote computer did not re... - 31.Aug.2003 7:55:00 PM tshinder Posts: 50013 Joined: 10.Jan.2001 From: Texas Status: offline Hi Jon,Does your ISP allow inbound VPN connections?Thanks!Tom (in reply to All rights reserved. WindowSecurity.com Network Security & Information Security resource for IT administrators.

First Name Please enter a first name Last Name Please enter a last name Email We will never share this with anyone. Close this window and log in. References Microsoft: How to configure a connection to a virtual private network (VPN) in Windows XP Microsoft: "Error 623 The System Could Not Find the Phone Book Entry for this Connection" Login.

You will also need to port forward 1723 to the Go to Solution 11 Comments LVL 16 Overall: Level 16 Networking 6 Software Firewalls 4 Hardware Firewalls 3 Message Accepted However in the past week the 4 same users seem to be getting the following error message when entering their login details:error 721: remote computer did not respond.It's strange because these Cisco VPN Error 31 Certificate Won't Install A certificate is a data file issued by a certification authority (local or remote) to an individual or organization to identify them... https://www.experts-exchange.com/questions/21334514/VPN-question-error-721-Remote-computer-did-not-respond.html Search for a recent change in any of the interfaces of the machine with troubles.

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Updating the NIC drivers seemd like an unneeded step as well. http://serverfault.com/questions/110009/vpn-returning-721-error-despite-successful-logins-to-from-other-locations E-mail and other web connectivity is not a problem. Now that you use > a > > fixed IP, it always works. > > > > Incidently, you do not need to forward port 47. This has led me to believe that the problem is entirely with the one machine.

Send me notifications when members answer or reply to this question. check my blog 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 We use a multi-NAT for routing service > > > > request to internal servers. I decided to use the router's public IP address for PPTP requests, instead of one of the other public IP addresses our ISP assigned us, and simply forward PPTP (TCP 1723

Don’t miss out on this exclusive content! Here's Why Members Love Tek-Tips Forums: Talk To Other Members Notification Of Responses To Questions Favorite Forums One Click Access Keyword Search Of All Posts, And More... But the reply goes through the same channel as above, so the reply doesn't have this IP in the packet. http://digitalfishbowl.net/vpn-error/vpn-error-721-the-remote-computer-did-not-respond.html But you do not need tcp port 47. > > > > > > Best wishes, > > > Bill > > > > > > "Frank" <> wrote in message

I've since tried the VPN connection on three more machines here at the shop, and every one of them connects just fine (and one of those machines is in pretty poor I had, as an example, routed ras2.mydomain.com (208.38.4.103) to some internal IP for PPTP connections only (netopia routers have PPTP predefined which takes care of TCP port 1723 & GRE IP It would take a while to explain here, so a rather point you to one article in the web that explain this "problem" and how to bypass it.

The central server is a domain controller with AD.

Also, Redoing the OS may or may not be necessary. We have struggled with this for a year > > > now. > > > > For whatever reason, it struggles to make a successful connection to > our > > ISA server software Monitoring & Admin Reporting Security Services Featured Products Featured Book Order today Amazon.com TechGenix Sites MSExchange.org The leading Microsoft Exchange Server 2010 / 2007 / 2003 resource site. We have approximately 32 public IP addresses, hence why we use Multi-NAT for routing public services to internal servers.

You need to allow port 1723 TCP for PPTP and GRE, IP Protocol 47. Usually 721 just indicates that GRE is being blocked. Please try again later. http://digitalfishbowl.net/vpn-error/vpn-error-721-the-remote-computer.html I was sniffing the wrong lamppost !The VPN works fine - The place where I was trying to test it was blocking the GRE packets.

This is a widely > held > > > belief (even router manufacturers use it in their documentation), but it > > is > > > false. All the other services work > > > perfectly with the router's Multi-NAT table.