Error 721 Remote Computer
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To New Topics Error 721: Remote PPP peer or computer is not responding. Resolution: If you have tried many thing https://support.microsoft.com/en-us/kb/888201 other people suggest like rebooting, reloading hardware and re-installing the VPN or dial in connection, you still get the same problem. I will suggest to check the router settings and make sure TCP Port http://www.howtonetworking.com/vpnissues/error721.htm 1723, IP Protocol 47 (GRE) are opened. Also make sure that the router has the PPTP enabled and not firewall block the traffic. On the RAS server, check the DHCP settings. 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 for VPN VPN/PPTP VPN Slow Issues Previous Page Next Page This web is provided "AS IS" with no warranties. Copyright © 2002-2015 ChicagoTech.net, All rights reserved. Unauthorized reproduction forbidden.
for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Ask a Question Ask for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help https://www.experts-exchange.com/questions/21334514/VPN-question-error-721-Remote-computer-did-not-respond.html Expand Search Submit Close Search Login Join Today Products BackProducts Gigs Live Careers Vendor Services Groups Website Testing Store Headlines Experts Exchange > Questions > VPN question - "error 721: Remote computer did not respond" Want to Advertise Here? Solved VPN question - "error 721: Remote computer did not respond" Posted on 2005-03-02 Software Firewalls Hardware Firewalls Networking 3 Verified Solutions 11 Comments 34,429 Views Last Modified: 2013-11-16 I'm trying to setup error 721 VPN against a Windows 2003 server. Client is XP pro. The server is behind a router that run NAT. When I'm connecting to the VPN server directly to the internal IP I connnect without problems. Our ISP have setup the NAT on the router to temporarily allow all IP traffic to this external IP. But when I try to VPN connect to external IP it hangs with message "verifying username/password" and then error 721 remote I get "error 721: Remote computer did not respond". Any ideas what might be wrong? Are any particular settings on the router needed to make this work? 0 Question by:rj2 Facebook Twitter LinkedIn Google LVL 16 Best Solution bysamccarthy You will need to verify that the ISP is letting the traffic IN from the external IP. You need to allow port 1723 TCP for PPTP and GRE, IP Protocol 47. 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 Solution by:samccarthy2005-03-02 You will need to verify that the ISP is letting the traffic IN from the external IP. You need to allow port 1723 TCP for PPTP and GRE, IP Protocol 47. You will also need to port forward 1723 to the Nat IP address of the Windows 2003 server doing the VPN. So, your external client sends a VPN request to the external IP. The router sees this on port 1723 and then will forward that on to the IP address of your server. 0 LVL 10 Overall: Level 10 Message Author Comment by:rj22005-03-02 Well, the ISP says that they believe everything is ok on the router, and it i