Hurricane Electric's IPv6 Tunnel Broker Forums

Tunnelbroker.net Specific Topics => Questions & Answers => Topic started by: musiclover on July 01, 2009, 05:07:15 AM

Title: How can I unblock ICMP?
Post by: musiclover 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?
Title: Re: How can I unblock ICMP?
Post by: cholzhauer 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?
Title: Re: How can I unblock ICMP?
Post by: musiclover 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)
Title: Re: How can I unblock ICMP?
Post by: cholzhauer 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.