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Author Topic: How can I unblock ICMP?  (Read 5900 times)

musiclover

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How can I unblock ICMP?
« on: July 01, 2009, 05:07:15 AM »

When trying to make a new tunnel I get the message:
Error: Your IPv4 endpoint is unreachable or unstable. Please make sure ICMP is not blocked.

This is even without Firewall. What can I do to make a tunnel?
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cholzhauer

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  • Posts: 2736
Re: How can I unblock ICMP?
« Reply #1 on: July 01, 2009, 05:16:30 AM »

What OS are you running?  You're sure that you've either allowed ICMP through that firewall or turned off the firewall all together? 

Are you behind a NAT router?

Is there a firewall on your cable modem or DSL modem?
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musiclover

  • Guest
Re: How can I unblock ICMP?
« Reply #2 on: July 01, 2009, 06:53:59 AM »

I am using Windows Xp SP3. And I started windows without turning the firewall on. My adsl modem has no firewall. Maybe the problem lies with my provider (KPN)
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cholzhauer

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Re: How can I unblock ICMP?
« Reply #3 on: July 01, 2009, 06:56:01 AM »

It is possible...do you know if they are blocking ICMP to end users?  You might want to ask them that...if they don't block it, at least you'll be able to rule something out.
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