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298 posts

Ultimate Geek
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Topic # 5108 29-Sep-2005 12:05
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We are running a PPTP VPN, when we use the Sierra data cards within NZ we can connect fine to our VPN.

However when roaming in Oz the VPN refuses to connect. I did some port test etc and I can see that in Oz port 1723 is allowed through but what is being blocked is port 47 GRE which is essential to PPTP VPN's..

Since we are behind NAT and getting a 10.x.x.x address, I don't see how this will work without allowing GRE through. Talking to the wireless helpdesk they told us to use a valid Xtra username and password which should give us a real ip address. We tried this, however the username and password were rejected. Wireless helpdesk said it should work, goodbye thankyou...

It is a jetstream login without the .xadsl, it works fine via xtra web mail...

Now I understand with a Voda card we just change the APN to web.vodafone.co.nz and it gives a real IP address so the VPN works fine.

Any suggestions? Apart from giving all these Sierra cards back?
Can anyone confirm using an Xtra username/password to establish the connection is Oz will indeed give you a real ipaddress?




My opinions and ideas expressed in posts are solely my own and do not reflect the views of my employer in any way..


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426 posts

Ultimate Geek
+1 received by user: 16

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Spark NZ
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  Reply # 21384 12-Oct-2005 14:55
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"Can anyone confirm using an Xtra username/password to establish the connection is Oz will indeed give you a real ipaddress?"

This is supposed to work. Your connection is tunneled back to NZ so that you appear onto the Xtra network rather than the Telstra mobile internet access network. You should get a 166.179.x.x.

You can verify that it should work in Oz by trying it in NZ.

Neal Richardson.




The comments I write on this forum do not necessarily reflect the views of my employer and as such cannot be taken as official statements of my employer.

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