Error 721 Remote Access
I have FINALLY resolved an ongoing issue with our VPN connections that we have been experiencing for over a year directv error 721 now. I will share these findings with this forum in case others error 721 on directv tv can benefit from our situation. First let me explain the problem. The Problem: It can take up 6 error 721 vpn windows xp retries for any remote user to successfully created a remote PPTP connection to our servers. Whenever we try to connect it display the following message: Verifying username and password... And it sit there displaying this message for about 30-40 seconds, then it says: "error: 721 The remote computer did not respond." Network Setup: We have two netopia routers on our network. They both have their own separate WAN connection (we use a lot of bandwidth, hence the need for two WAN connections). One RAS server is configured to use one router as it's gateway, and the other RAS server uses the second router as it's gateway. When PPTP connections are made, the connection comes in and back out the same router (this I made sure). We use a multi-NAT for routing service request to internal servers. FTP, WWW, RDP, PCAnywhere, SSL, PPTP, MAIL, etc...all these services are routed to internal servers/workstations. We have approximately 32 public IP addresses, hence why we use Multi-NAT for routing public services to internal servers. Everything works perfectly, EXCEPT PPTP (VPN) connections. We have struggled with this for a year now. For whatever reason, it struggles to make a successful connection to our RAS servers. 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 is behind a Linksys router). The Fix: Today, I decided to try something different. 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
Your Name *Required This error might be caused by one of the following situations: The channel you're trying to watch is not included in your programming package. Your receiver is not processing the programming information on this channel. To resolve the issue yourself, follow the steps below or watch the video. Solution 1: Check your channel lineup Step 1 Sign in to your DIRECTV online account. Step 2 On the My Overview page, click Print Channel Lineup. Step 3 If the channel you're trying to watch is not included http://www.pcreview.co.uk/threads/error-721-finally-resolved.1574450/ in your programming package, click Change Package to easily upgrade your package. Still seeing Error Code 721 on your TV screen? Try Solution 2. Solution 2: Refresh your service Step 1 Many issues, such as missing channels, can be fixed by “refreshing” your receiver. Please visit the My Equipment page and then select the “Refresh Receiver” link next to the receiver you’re having trouble https://support.directv.com/app/answers/detail/a_id/1647/~/directv-error-code-721 with. Still seeing Error Code 721 on your TV screen? Try Solution 3. Solution 3: Reset your receiver Step 1 Unplug your receiver's power cord from the electrical outlet, wait for 15 seconds, and plug it back in. Step 2 Press the Power button on the front panel of your receiver. Wait for your receiver to reboot. Step 3 Go to My Equipment to refresh your receiver again. Still seeing Error Code 721 on your TV screen? Please call 1-800-531-5000 for assistance. Was This Helpful? Yes No We're sorry to hear that. Please contact us. We appreciate you taking the time to help us improve our support site. Please take a minute to tell us how we can improve this answer to better serve you. Important: Comments are collected and periodically reviewed to help us improve answers in our knowledgebase. Due to the volume of feedback we receive, we are not able to respond to comments submitted here. If you require a response, please refer to our Contact Us page for ways you can contact DirecTV or click "email us" after you close this screen. EmailRequired * You
Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks. Windows 7 Help Forums Windows 7 http://www.sevenforums.com/network-sharing/93003-vpn-gurus-error-721-a.html help and support Network & Sharing » User Name Remember Me? Password Advanced Search Show https://www.experts-exchange.com/questions/21334514/VPN-question-error-721-Remote-computer-did-not-respond.html Threads Show Posts Advanced Search Go to Page... Windows 7: VPN Gurus: error 721 23 Jun 2010 #1 BigJohnny Win7 8 posts VPN Gurus: error 721 hi, i wanted to implement a vpn connection using microsoft technology. i enabled ras on the host computer which has win 7. the host computer sits behind a di-524 error 721 router, so i've enabled pptp pass through and ipsec pass through, moreover, i set a port forwarding for 1723 and 500 (both tcp and udp) to the host computer. from the guest computer, who sits in a different subnet and uses win xp, i used telnet to verify that the host server can be reached, there was no problem reaching it. then i verified the generic routing encapsulation (gre) is set too, so i've error 721 remote used pptpclnt and pptpserv, and gre check complete successfully. still, when i set a vpn dialup connection, i get error 721 (after verifying username and password). any vpn guru can help me here? thanks. My System Specs OS Win7 BigJohnny View Public Profile Find More Posts by BigJohnny . 23 Jun 2010 #2 chev65 Windows 7 Ult, Windows 8.1 Pro, 9,149 posts San Diego I received error 721, which says the remote computer is not responding. Cause: This issue can occur if the network firewall does not permit GRE traffic (IP protocol 47). PPTP uses GRE for tunneled data. Solution: Configure the network firewall between the VPN client and the server to permit GRE. In addition, make sure that the network firewall permits TCP traffic on port 1723. Both of these conditions must be met to establish VPN connectivity by using PPTP. For more information, see article 888201, "You receive an "Error 721" error message when you try to establish a VPN connection through your Windows Server-based remote access server" in the Microsoft Knowledge Base. Troubleshooting remote access VPNs: Virtual Private Network (VPN) This is what comes up for error 721. Hope it helps. My System Specs Computer type PC/Desktop System Manufacturer/Model Number Home built OS Windows 7 Ult, Windows 8.1 Pro, CPU Q9650-4.275GHz, E8600 4.5GHz, E6750-3.8G
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 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 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 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 is setup according to the url below. h