cisco VPN client cannot connect to VPN gateway


Recommended Posts

I use cisco vpn client ver 4.6 in win XP and try to connect to VPN gateway that have public IP.

My computer is connected by direct cable to a router .And this router is connected

to internet by PPPoE .

I use Cisco VPN client ver 4.6 and try to connect VPN gateway .

But It is failure.The error is 412.

But if the same computer connect to internet by PPPoE directly and the VPN client

can connect the same VPN gateway without problem .

Why do I cannot connect VPN gateway when there is router .

How can I fix it ???

Please advice .

You shouldn't have to forward ports for the client to work only the server end will need the ports open.

Well he says it doesn't work if the router is plugged in. But works without the router.

That sounds like a port forwarding issue to me. Either that or uPnP or NAT is/are disabled lol.

^ exactly can you post the model numbers of the devices between your pc and the internet, possible double nat.

Also for cisco ipsec client to work your going need vpn passthrough enabled on the router, and a double nat could cause you problems.

post-14624-12883578887389.jpg

Also 4.6 is really old client btw, should still work - but curious why have not updated the client?

I do believe 5.0.7.0410 is the lastest version of the ipsec client.

edit: Just looked and 4.8 was available in jan 2007, so 4.6 is Really OLD..

I would suggest using shrewsoft VPN client for Cisco IPSEC. It is much faster to connect and establish a tunnel, and you can configure split DNS and WINS client side. The only reason I wouldn't recommend it is if your company won't allow an open source client.

Back on topic though, if it connects to the VPN without your router, it's definitely your router's fault. Either the router is blocking it (no passthrough, double nat, firewall, etc), or it's giving you an IP from the same IP block that the VPN server is giving you. I've seen that happen a few times at my job where people have the same subnet as the VPN network and can't connect.

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • Owing to the nature of Windows feature enablement updates, it was distributed over Windows Update services as a complete system upgrade rather than as an ordinary cumulative update
    • Microsoft confirms Windows 11 26H2, urges IT admins to prepare for release by Usama Jawad Windows 11 typically follows an annual update cycle, but Microsoft recently broke that tradition a bit by releasing a "26H1" version in the first half of this year as a "scoped" build for select new silicon PCs only. This version was not available for customers using 24H2 and 25H2 builds, as Microsoft is busy preparing version 26H2 for them, confirmed officially for the first time. In a Windows IT Pro blog, Microsoft has urged IT admins to prepare for the upcoming release of Windows 11 version 26H2. The company has confirmed that this will be a small enablement package (eKB) that will simply light up certain disabled features that are already present in the operating system's code base. This means that the "refined" Windows update and deployment experience will be simpler and quicker, with minimal disruptions, as the feature update will simply toggle a few flags rather than performing a complete replacement. Microsoft has explained that this is all possible because the standard Windows 11 releases share the same servicing branch and hence, the same source code. However, this also means that Windows 11 26H1 users won't be able to upgrade to 26H2 as that is a different branch, but this is something we have known for a while now. Similar to previous annual feature updates, Windows 11 26H2 will offer the following support cycles: 24 months of support for Home, Pro, Pro EDU, and Pro for Workstations editions 36 months of support for Enterprise, Education, IoT Enterprise, and Enterprise Multi-session editions Microsoft has not confirmed a concrete release date for Windows 11 26H2, but noted that it is "coming soon". If we go by the ongoing release cadence, we can expect it to begin rolling out in early October 2026. As such, IT admins have been encouraged to begin validating Windows Insider releases in the Experimental Channel, plan rollout rings, and strategize the utilization of their existing deployment tools.
    • Windows 11 gets new audio improvements in the latest builds by Taras Buria Today's Experimental builds (26H1 and Future Platforms, formerly Canary) pack several audio-related improvements. If your device is enrolled in the Experimental Channel (26H1), you can download build 28120.2315, while those in the Future Platforms version have build 29613.1000 to try. Here is what is new in build 29613.1000: [Audio] Following up on our previous improvements, we’re making some more adjustments to Settings > System > Sounds based on your feedback. Namely, we’ve updated the “All sound devices” page so: You now have the ability to change default devices from this page. Each of the devices displayed on this page now has a little volume meter next to it to show if there is audio actively playing. We’ve adjusted the page design slightly so now you can filter whether you’re viewing input or output devices. We’ve added toggles so you can choose if you want to hide or show disabled, disconnected, and unplugged devices on this page. We’ve also updated the input and output audio properties page for devices in Settings to now include jack information for those that need it. And here is the changelog for build 28120.2315: This update includes a small number of minor bug fixes and improvements. [Accessibility] This update improves caption style responsiveness by redrawing captions immediately for caption style changes. If no current caption is visible, a sample caption string is displayed. [Audio] This update improves the reliability of the inbox HD Audio driver. You can find the official release notes for build 28120.2315 here and for build 29613.1000 here.
    • I agree with what I think you are saying, just not in the way you are saying it. Like any tool, the amount it represents your work is perorational to the effort you put into it. It is similar to why 2nd grade math students learning to add and subtract are not allowed to use calculators, but a high-school calculous student is. For the 2nd grader, that tool would completely replace the work they are doing, for the calculous student the same tool allows them to work far more effectively while in no way replacing their effort or knowable. If you spend 30 seconds writing a prompt, then the image that comes out is no more "yours" than if you found the same image with a Google Image search. However, many of these generative tools also support highly iterative processes that allow back and forth, and merging generated images with photos or human created images. I am sure you would agree that a human spending hours of time working on a project, even if AI was involved in the process, still reflects that human's work.
  • Recent Achievements

    • Collaborator
      ryansurfer98 went up a rank
      Collaborator
    • Week One Done
      Eurosoft10 earned a badge
      Week One Done
    • One Month Later
      Eurosoft10 earned a badge
      One Month Later
    • One Year In
      Skeet Campbell earned a badge
      One Year In
    • One Month Later
      Sharbel earned a badge
      One Month Later
  • Popular Contributors

    1. 1
      +primortal
      575
    2. 2
      +Edouard
      189
    3. 3
      Michael Scrip
      79
    4. 4
      PsYcHoKiLLa
      78
    5. 5
      neufuse
      72
  • Tell a friend

    Love Neowin? Tell a friend!