ICMP Unpingable when creating a new tunnel

hmottaleb · April 02, 2014, 05:25:35 PM

Hi All,

I am new to all this and am trying to get the IPv6 certification.

I have a macbook pro with 10.6.8 on it and am trying to setup a regular tunnel.

After I copy and paste my endpoint address and click on submit, I get a an error message saying that my ICMP is unpingable.

I have searched this forum and the web but haven't found any information on how to fix this.

Any help would be appreciated.

Thanks
:(

cholzhauer · April 02, 2014, 05:34:34 PM

Is your isp blocking icmp? Did you allow it on your router/firewall?

hmottaleb · April 02, 2014, 05:54:23 PM

I don't see anything on my router that says ICMP is blocked.

I did try to ping the 66.220.2.74 address which was successful.

Not sure if the ISP is blocking it.

Thanks

cholzhauer · April 02, 2014, 05:57:59 PM

Which router? Icmp is normally blocked by default

hmottaleb · April 03, 2014, 04:34:02 AM

I have a Zoom router/cable modem combo at home.

Also, I just tried to create a regular tunnel at work and am getting the same message.

"IP is not ICMP pingable. Please make sure ICMP is not blocked".

cholzhauer · April 03, 2014, 05:07:50 AM

Model?

hmottaleb · April 03, 2014, 05:40:19 AM

Zoom 5350.

cholzhauer · April 03, 2014, 12:53:34 PM

Closest I can come is this

http://zoom.custhelp.com/app/answers/detail/a_id/1054/~/5350---i-am-getting-slow-throughput-with-the-cable-modem%2Frouter

Check around for ICMP

hmottaleb · April 03, 2014, 03:26:59 PM

That didn't help either. I actually disabled the firewall but it didn't make any difference either.

I also called Comcast today and they are telling me that they don't have ICMP blocked.

ravenstar · April 04, 2014, 04:37:08 AM

Is it definitely your WAN IP that you are setting as the IPv4 tunnel endpoint in the configuration page?

hmottaleb · April 04, 2014, 09:53:42 AM

Its the IP address that is automatically detected when creating a new tunnel. I just copy and paste it there.

sdgathman · April 04, 2014, 10:00:11 AM

If you are using a web proxy, the auto IP would be the proxy - not your laptop.

BTW, while he.net is more reliable, if you are going to be moving your laptop around, and use it behind NAT firewalls at restaurants, and such, you might look at sixxs.net - they offer AICCU, which tunnels IP6 over UDP - traversing NAT and firewalls with ease. He.net is better when you have a computer or server that is going to stay in one place for a while.

hmottaleb · April 10, 2014, 10:39:07 AM

I am now able to create a regular tunnel.

Disabling WAN Filtering on my router unblocked ICMP and now I have a tunnel.

Thank you all for all you help!

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ICMP Unpingable when creating a new tunnel